1 /* Compiler driver program that can handle many languages.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
5 Free Software Foundation, Inc.
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 3, or (at your option) any later
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
23 /* This program is the user interface to the C compiler and possibly to
24 other compilers. It is used because compilation is a complicated procedure
25 which involves running several programs and passing temporary files between
26 them, forwarding the users switches to those programs selectively,
27 and deleting the temporary files at the end.
29 CC recognizes how to compile each input file by suffixes in the file names.
30 Once it knows which kind of compilation to perform, the procedure for
31 compilation is specified by a string called a "spec". */
35 #include "coretypes.h"
36 #include "multilib.h" /* before tm.h */
39 #if ! defined( SIGCHLD ) && defined( SIGCLD )
40 # define SIGCHLD SIGCLD
47 #include "diagnostic.h"
52 # include <sys/mman.h>
54 /* This is on Solaris. */
55 # include <sys/types.h>
60 # define MAP_FAILED ((void *)-1)
63 /* By default there is no special suffix for target executables. */
64 /* FIXME: when autoconf is fixed, remove the host check - dj */
65 #if defined(TARGET_EXECUTABLE_SUFFIX) && defined(HOST_EXECUTABLE_SUFFIX)
66 #define HAVE_TARGET_EXECUTABLE_SUFFIX
69 /* By default there is no special suffix for host executables. */
70 #ifdef HOST_EXECUTABLE_SUFFIX
71 #define HAVE_HOST_EXECUTABLE_SUFFIX
73 #define HOST_EXECUTABLE_SUFFIX ""
76 /* By default, the suffix for target object files is ".o". */
77 #ifdef TARGET_OBJECT_SUFFIX
78 #define HAVE_TARGET_OBJECT_SUFFIX
80 #define TARGET_OBJECT_SUFFIX ".o"
83 static const char dir_separator_str[] = { DIR_SEPARATOR, 0 };
85 /* Most every one is fine with LIBRARY_PATH. For some, it conflicts. */
86 #ifndef LIBRARY_PATH_ENV
87 #define LIBRARY_PATH_ENV "LIBRARY_PATH"
91 #define kill(p,s) raise(s)
94 /* If a stage of compilation returns an exit status >= 1,
95 compilation of that file ceases. */
97 #define MIN_FATAL_STATUS 1
99 /* Flag set by cppspec.c to 1. */
102 /* Flag set to nonzero if an @file argument has been supplied to gcc. */
103 static bool at_file_supplied;
105 /* Definition of string containing the arguments given to configure. */
106 #include "configargs.h"
108 /* Flag saying to print the command line options understood by gcc and its
111 static int print_help_list;
113 /* Flag saying to print the version of gcc and its sub-processes. */
115 static int print_version;
117 /* Flag indicating whether we should print the command and arguments */
119 static int verbose_flag;
121 /* Flag indicating whether we should ONLY print the command and
122 arguments (like verbose_flag) without executing the command.
123 Displayed arguments are quoted so that the generated command
124 line is suitable for execution. This is intended for use in
125 shell scripts to capture the driver-generated command line. */
126 static int verbose_only_flag;
128 /* Flag indicating how to print command line options of sub-processes. */
130 static int print_subprocess_help;
132 /* Whether we should report subprocess execution times to a file. */
134 FILE *report_times_to_file = NULL;
136 /* Nonzero means place this string before uses of /, so that include
137 and library files can be found in an alternate location. */
139 #ifdef TARGET_SYSTEM_ROOT
140 static const char *target_system_root = TARGET_SYSTEM_ROOT;
142 static const char *target_system_root = 0;
145 /* Nonzero means pass the updated target_system_root to the compiler. */
147 static int target_system_root_changed;
149 /* Nonzero means append this string to target_system_root. */
151 static const char *target_sysroot_suffix = 0;
153 /* Nonzero means append this string to target_system_root for headers. */
155 static const char *target_sysroot_hdrs_suffix = 0;
157 /* Nonzero means write "temp" files in source directory
158 and use the source file's name in them, and don't delete them. */
160 static enum save_temps {
161 SAVE_TEMPS_NONE, /* no -save-temps */
162 SAVE_TEMPS_CWD, /* -save-temps in current directory */
163 SAVE_TEMPS_OBJ /* -save-temps in object directory */
166 /* Output file to use to get the object directory for -save-temps=obj */
167 static char *save_temps_prefix = 0;
168 static size_t save_temps_length = 0;
170 /* The compiler version. */
172 static const char *compiler_version;
174 /* The target version. */
176 static const char *const spec_version = DEFAULT_TARGET_VERSION;
178 /* The target machine. */
180 static const char *spec_machine = DEFAULT_TARGET_MACHINE;
182 /* Nonzero if cross-compiling.
183 When -b is used, the value comes from the `specs' file. */
185 #ifdef CROSS_DIRECTORY_STRUCTURE
186 static const char *cross_compile = "1";
188 static const char *cross_compile = "0";
191 /* Greatest exit code of sub-processes that has been encountered up to
193 static int greatest_status = 1;
195 /* This is the obstack which we use to allocate many strings. */
197 static struct obstack obstack;
199 /* This is the obstack to build an environment variable to pass to
200 collect2 that describes all of the relevant switches of what to
201 pass the compiler in building the list of pointers to constructors
204 static struct obstack collect_obstack;
206 /* Forward declaration for prototypes. */
210 static void init_spec (void);
211 static void store_arg (const char *, int, int);
212 static void insert_wrapper (const char *);
213 static char *load_specs (const char *);
214 static void read_specs (const char *, int);
215 static void set_spec (const char *, const char *);
216 static struct compiler *lookup_compiler (const char *, size_t, const char *);
217 static char *build_search_list (const struct path_prefix *, const char *,
219 static void xputenv (const char *);
220 static void putenv_from_prefixes (const struct path_prefix *, const char *,
222 static int access_check (const char *, int);
223 static char *find_a_file (const struct path_prefix *, const char *, int, bool);
224 static void add_prefix (struct path_prefix *, const char *, const char *,
226 static void add_sysrooted_prefix (struct path_prefix *, const char *,
227 const char *, int, int, int);
228 static char *skip_whitespace (char *);
229 static void delete_if_ordinary (const char *);
230 static void delete_temp_files (void);
231 static void delete_failure_queue (void);
232 static void clear_failure_queue (void);
233 static int check_live_switch (int, int);
234 static const char *handle_braces (const char *);
235 static inline bool input_suffix_matches (const char *, const char *);
236 static inline bool switch_matches (const char *, const char *, int);
237 static inline void mark_matching_switches (const char *, const char *, int);
238 static inline void process_marked_switches (void);
239 static const char *process_brace_body (const char *, const char *, const char *, int, int);
240 static const struct spec_function *lookup_spec_function (const char *);
241 static const char *eval_spec_function (const char *, const char *);
242 static const char *handle_spec_function (const char *);
243 static char *save_string (const char *, int);
244 static void set_collect_gcc_options (void);
245 static int do_spec_1 (const char *, int, const char *);
246 static int do_spec_2 (const char *);
247 static void do_option_spec (const char *, const char *);
248 static void do_self_spec (const char *);
249 static const char *find_file (const char *);
250 static int is_directory (const char *, bool);
251 static const char *validate_switches (const char *);
252 static void validate_all_switches (void);
253 static inline void validate_switches_from_spec (const char *);
254 static void give_switch (int, int);
255 static int used_arg (const char *, int);
256 static int default_arg (const char *, int);
257 static void set_multilib_dir (void);
258 static void print_multilib_info (void);
259 static void perror_with_name (const char *);
260 static void display_help (void);
261 static void add_preprocessor_option (const char *, int);
262 static void add_assembler_option (const char *, int);
263 static void add_linker_option (const char *, int);
264 static void process_command (unsigned int, struct cl_decoded_option *);
265 static int execute (void);
266 static void alloc_args (void);
267 static void clear_args (void);
268 static void fatal_signal (int);
269 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
270 static void init_gcc_specs (struct obstack *, const char *, const char *,
273 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
274 static const char *convert_filename (const char *, int, int);
277 static const char *getenv_spec_function (int, const char **);
278 static const char *if_exists_spec_function (int, const char **);
279 static const char *if_exists_else_spec_function (int, const char **);
280 static const char *replace_outfile_spec_function (int, const char **);
281 static const char *remove_outfile_spec_function (int, const char **);
282 static const char *version_compare_spec_function (int, const char **);
283 static const char *include_spec_function (int, const char **);
284 static const char *find_file_spec_function (int, const char **);
285 static const char *find_plugindir_spec_function (int, const char **);
286 static const char *print_asm_header_spec_function (int, const char **);
287 static const char *compare_debug_dump_opt_spec_function (int, const char **);
288 static const char *compare_debug_self_opt_spec_function (int, const char **);
289 static const char *compare_debug_auxbase_opt_spec_function (int, const char **);
291 /* The Specs Language
293 Specs are strings containing lines, each of which (if not blank)
294 is made up of a program name, and arguments separated by spaces.
295 The program name must be exact and start from root, since no path
296 is searched and it is unreliable to depend on the current working directory.
297 Redirection of input or output is not supported; the subprograms must
298 accept filenames saying what files to read and write.
300 In addition, the specs can contain %-sequences to substitute variable text
301 or for conditional text. Here is a table of all defined %-sequences.
302 Note that spaces are not generated automatically around the results of
303 expanding these sequences; therefore, you can concatenate them together
304 or with constant text in a single argument.
306 %% substitute one % into the program name or argument.
307 %i substitute the name of the input file being processed.
308 %b substitute the basename of the input file being processed.
309 This is the substring up to (and not including) the last period
310 and not including the directory unless -save-temps was specified
311 to put temporaries in a different location.
312 %B same as %b, but include the file suffix (text after the last period).
314 substitute a file name that has suffix SUFFIX and is chosen
315 once per compilation, and mark the argument a la %d. To reduce
316 exposure to denial-of-service attacks, the file name is now
317 chosen in a way that is hard to predict even when previously
318 chosen file names are known. For example, `%g.s ... %g.o ... %g.s'
319 might turn into `ccUVUUAU.s ccXYAXZ12.o ccUVUUAU.s'. SUFFIX matches
320 the regexp "[.0-9A-Za-z]*%O"; "%O" is treated exactly as if it
321 had been pre-processed. Previously, %g was simply substituted
322 with a file name chosen once per compilation, without regard
323 to any appended suffix (which was therefore treated just like
324 ordinary text), making such attacks more likely to succeed.
326 like %g, but if -pipe is in effect, expands simply to "-".
328 like %g, but if -pipe is in effect, expands to nothing. (We have both
329 %| and %m to accommodate differences between system assemblers; see
330 the AS_NEEDS_DASH_FOR_PIPED_INPUT target macro.)
332 like %g, but generates a new temporary file name even if %uSUFFIX
335 substitutes the last file name generated with %uSUFFIX, generating a
336 new one if there is no such last file name. In the absence of any
337 %uSUFFIX, this is just like %gSUFFIX, except they don't share
338 the same suffix "space", so `%g.s ... %U.s ... %g.s ... %U.s'
339 would involve the generation of two distinct file names, one
340 for each `%g.s' and another for each `%U.s'. Previously, %U was
341 simply substituted with a file name chosen for the previous %u,
342 without regard to any appended suffix.
344 substitutes the name of the HOST_BIT_BUCKET, if any, and if it is
345 writable, and if save-temps is off; otherwise, substitute the name
346 of a temporary file, just like %u. This temporary file is not
347 meant for communication between processes, but rather as a junk
350 substitutes .SUFFIX for the suffixes of a matched switch's args when
351 it is subsequently output with %*. SUFFIX is terminated by the next
353 %d marks the argument containing or following the %d as a
354 temporary file name, so that that file will be deleted if GCC exits
355 successfully. Unlike %g, this contributes no text to the argument.
356 %w marks the argument containing or following the %w as the
357 "output file" of this compilation. This puts the argument
358 into the sequence of arguments that %o will substitute later.
359 %V indicates that this compilation produces no "output file".
361 like %{...} but mark last argument supplied within
362 as a file to be deleted on failure.
363 %o substitutes the names of all the output files, with spaces
364 automatically placed around them. You should write spaces
365 around the %o as well or the results are undefined.
366 %o is for use in the specs for running the linker.
367 Input files whose names have no recognized suffix are not compiled
368 at all, but they are included among the output files, so they will
370 %O substitutes the suffix for object files. Note that this is
371 handled specially when it immediately follows %g, %u, or %U
372 (with or without a suffix argument) because of the need for
373 those to form complete file names. The handling is such that
374 %O is treated exactly as if it had already been substituted,
375 except that %g, %u, and %U do not currently support additional
376 SUFFIX characters following %O as they would following, for
378 %I Substitute any of -iprefix (made from GCC_EXEC_PREFIX), -isysroot
379 (made from TARGET_SYSTEM_ROOT), -isystem (made from COMPILER_PATH
380 and -B options) and -imultilib as necessary.
381 %s current argument is the name of a library or startup file of some sort.
382 Search for that file in a standard list of directories
383 and substitute the full name found.
384 %eSTR Print STR as an error message. STR is terminated by a newline.
385 Use this when inconsistent options are detected.
386 %nSTR Print STR as a notice. STR is terminated by a newline.
387 %x{OPTION} Accumulate an option for %X.
388 %X Output the accumulated linker options specified by compilations.
389 %Y Output the accumulated assembler options specified by compilations.
390 %Z Output the accumulated preprocessor options specified by compilations.
391 %a process ASM_SPEC as a spec.
392 This allows config.h to specify part of the spec for running as.
393 %A process ASM_FINAL_SPEC as a spec. A capital A is actually
394 used here. This can be used to run a post-processor after the
395 assembler has done its job.
396 %D Dump out a -L option for each directory in startfile_prefixes.
397 If multilib_dir is set, extra entries are generated with it affixed.
398 %l process LINK_SPEC as a spec.
399 %L process LIB_SPEC as a spec.
400 %G process LIBGCC_SPEC as a spec.
401 %R Output the concatenation of target_system_root and
402 target_sysroot_suffix.
403 %S process STARTFILE_SPEC as a spec. A capital S is actually used here.
404 %E process ENDFILE_SPEC as a spec. A capital E is actually used here.
405 %C process CPP_SPEC as a spec.
406 %1 process CC1_SPEC as a spec.
407 %2 process CC1PLUS_SPEC as a spec.
408 %* substitute the variable part of a matched option. (See below.)
409 Note that each comma in the substituted string is replaced by
411 %<S remove all occurrences of -S from the command line.
412 Note - this command is position dependent. % commands in the
413 spec string before this one will see -S, % commands in the
414 spec string after this one will not.
415 %<S* remove all occurrences of all switches beginning with -S from the
418 Call the named function FUNCTION, passing it ARGS. ARGS is
419 first processed as a nested spec string, then split into an
420 argument vector in the usual fashion. The function returns
421 a string which is processed as if it had appeared literally
422 as part of the current spec.
423 %{S} substitutes the -S switch, if that switch was given to GCC.
424 If that switch was not specified, this substitutes nothing.
425 Here S is a metasyntactic variable.
426 %{S*} substitutes all the switches specified to GCC whose names start
427 with -S. This is used for -o, -I, etc; switches that take
428 arguments. GCC considers `-o foo' as being one switch whose
429 name starts with `o'. %{o*} would substitute this text,
430 including the space; thus, two arguments would be generated.
431 %{S*&T*} likewise, but preserve order of S and T options (the order
432 of S and T in the spec is not significant). Can be any number
433 of ampersand-separated variables; for each the wild card is
434 optional. Useful for CPP as %{D*&U*&A*}.
436 %{S:X} substitutes X, if the -S switch was given to GCC.
437 %{!S:X} substitutes X, if the -S switch was NOT given to GCC.
438 %{S*:X} substitutes X if one or more switches whose names start
439 with -S was given to GCC. Normally X is substituted only
440 once, no matter how many such switches appeared. However,
441 if %* appears somewhere in X, then X will be substituted
442 once for each matching switch, with the %* replaced by the
443 part of that switch that matched the '*'.
444 %{.S:X} substitutes X, if processing a file with suffix S.
445 %{!.S:X} substitutes X, if NOT processing a file with suffix S.
446 %{,S:X} substitutes X, if processing a file which will use spec S.
447 %{!,S:X} substitutes X, if NOT processing a file which will use spec S.
449 %{S|T:X} substitutes X if either -S or -T was given to GCC. This may be
450 combined with '!', '.', ',', and '*' as above binding stronger
452 If %* appears in X, all of the alternatives must be starred, and
453 only the first matching alternative is substituted.
454 %{S:X; if S was given to GCC, substitutes X;
455 T:Y; else if T was given to GCC, substitutes Y;
456 :D} else substitutes D. There can be as many clauses as you need.
457 This may be combined with '.', '!', ',', '|', and '*' as above.
459 %(Spec) processes a specification defined in a specs file as *Spec:
460 %[Spec] as above, but put __ around -D arguments
462 The conditional text X in a %{S:X} or similar construct may contain
463 other nested % constructs or spaces, or even newlines. They are
464 processed as usual, as described above. Trailing white space in X is
465 ignored. White space may also appear anywhere on the left side of the
466 colon in these constructs, except between . or * and the corresponding
469 The -O, -f, -m, and -W switches are handled specifically in these
470 constructs. If another value of -O or the negated form of a -f, -m, or
471 -W switch is found later in the command line, the earlier switch
472 value is ignored, except with {S*} where S is just one letter; this
473 passes all matching options.
475 The character | at the beginning of the predicate text is used to indicate
476 that a command should be piped to the following command, but only if -pipe
479 Note that it is built into GCC which switches take arguments and which
480 do not. You might think it would be useful to generalize this to
481 allow each compiler's spec to say which switches take arguments. But
482 this cannot be done in a consistent fashion. GCC cannot even decide
483 which input files have been specified without knowing which switches
484 take arguments, and it must know which input files to compile in order
485 to tell which compilers to run.
487 GCC also knows implicitly that arguments starting in `-l' are to be
488 treated as compiler output files, and passed to the linker in their
489 proper position among the other output files. */
491 /* Define the macros used for specs %a, %l, %L, %S, %C, %1. */
493 /* config.h can define ASM_SPEC to provide extra args to the assembler
494 or extra switch-translations. */
499 /* config.h can define ASM_FINAL_SPEC to run a post processor after
500 the assembler has run. */
501 #ifndef ASM_FINAL_SPEC
502 #define ASM_FINAL_SPEC ""
505 /* config.h can define CPP_SPEC to provide extra args to the C preprocessor
506 or extra switch-translations. */
511 /* config.h can define CC1_SPEC to provide extra args to cc1 and cc1plus
512 or extra switch-translations. */
517 /* config.h can define CC1PLUS_SPEC to provide extra args to cc1plus
518 or extra switch-translations. */
520 #define CC1PLUS_SPEC ""
523 /* config.h can define LINK_SPEC to provide extra args to the linker
524 or extra switch-translations. */
529 /* config.h can define LIB_SPEC to override the default libraries. */
531 #define LIB_SPEC "%{!shared:%{g*:-lg} %{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p}}"
536 /* XXX: valid only for GNU ld */
537 /* XXX: should exactly match hooks provided by libmudflap.a */
538 #define MFWRAP_SPEC " %{static: %{fmudflap|fmudflapth: \
539 --wrap=malloc --wrap=free --wrap=calloc --wrap=realloc\
540 --wrap=mmap --wrap=munmap --wrap=alloca\
541 } %{fmudflapth: --wrap=pthread_create\
542 }} %{fmudflap|fmudflapth: --wrap=main}"
545 #define MFLIB_SPEC "%{fmudflap|fmudflapth: -export-dynamic}"
548 /* When using -fsplit-stack we need to wrap pthread_create, in order
549 to initialize the stack guard. We always use wrapping, rather than
550 shared library ordering, and we keep the wrapper function in
551 libgcc. This is not yet a real spec, though it could become one;
552 it is currently just stuffed into LINK_SPEC. FIXME: This wrapping
553 only works with GNU ld and gold. FIXME: This is incompatible with
554 -fmudflap when linking statically, which wants to do its own
556 #define STACK_SPLIT_SPEC " %{fsplit-stack: --wrap=pthread_create}"
558 /* config.h can define LIBGCC_SPEC to override how and when libgcc.a is
561 #if defined(REAL_LIBGCC_SPEC)
562 #define LIBGCC_SPEC REAL_LIBGCC_SPEC
563 #elif defined(LINK_LIBGCC_SPECIAL_1)
564 /* Have gcc do the search for libgcc.a. */
565 #define LIBGCC_SPEC "libgcc.a%s"
567 #define LIBGCC_SPEC "-lgcc"
571 /* config.h can define STARTFILE_SPEC to override the default crt0 files. */
572 #ifndef STARTFILE_SPEC
573 #define STARTFILE_SPEC \
574 "%{!shared:%{pg:gcrt0%O%s}%{!pg:%{p:mcrt0%O%s}%{!p:crt0%O%s}}}"
577 /* config.h can define ENDFILE_SPEC to override the default crtn files. */
579 #define ENDFILE_SPEC ""
583 #define LINKER_NAME "collect2"
586 #ifdef HAVE_AS_DEBUG_PREFIX_MAP
587 #define ASM_MAP " %{fdebug-prefix-map=*:--debug-prefix-map %*}"
592 /* Define ASM_DEBUG_SPEC to be a spec suitable for translating '-g'
594 #ifndef ASM_DEBUG_SPEC
595 # if defined(DBX_DEBUGGING_INFO) && defined(DWARF2_DEBUGGING_INFO) \
596 && defined(HAVE_AS_GDWARF2_DEBUG_FLAG) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
597 # define ASM_DEBUG_SPEC \
598 (PREFERRED_DEBUGGING_TYPE == DBX_DEBUG \
599 ? "%{!g0:%{gdwarf-2*:--gdwarf2}%{!gdwarf-2*:%{g*:--gstabs}}}" ASM_MAP \
600 : "%{!g0:%{gstabs*:--gstabs}%{!gstabs*:%{g*:--gdwarf2}}}" ASM_MAP)
602 # if defined(DBX_DEBUGGING_INFO) && defined(HAVE_AS_GSTABS_DEBUG_FLAG)
603 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gstabs}}" ASM_MAP
605 # if defined(DWARF2_DEBUGGING_INFO) && defined(HAVE_AS_GDWARF2_DEBUG_FLAG)
606 # define ASM_DEBUG_SPEC "%{g*:%{!g0:--gdwarf2}}" ASM_MAP
610 #ifndef ASM_DEBUG_SPEC
611 # define ASM_DEBUG_SPEC ""
614 /* Here is the spec for running the linker, after compiling all files. */
616 /* This is overridable by the target in case they need to specify the
617 -lgcc and -lc order specially, yet not require them to override all
618 of LINK_COMMAND_SPEC. */
619 #ifndef LINK_GCC_C_SEQUENCE_SPEC
620 #define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
623 #ifndef LINK_SSP_SPEC
624 #ifdef TARGET_LIBC_PROVIDES_SSP
625 #define LINK_SSP_SPEC "%{fstack-protector:}"
627 #define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all:-lssp_nonshared -lssp}"
631 #ifndef LINK_PIE_SPEC
633 #define LINK_PIE_SPEC "%{pie:-pie} "
635 #define LINK_PIE_SPEC "%{pie:} "
639 #ifndef LINK_BUILDID_SPEC
640 # if defined(HAVE_LD_BUILDID) && defined(ENABLE_LD_BUILDID)
641 # define LINK_BUILDID_SPEC "%{!r:--build-id} "
646 /* -u* was put back because both BSD and SysV seem to support it. */
647 /* %{static:} simply prevents an error message if the target machine
648 doesn't handle -static. */
649 /* We want %{T*} after %{L*} and %D so that it can be used to specify linker
650 scripts which exist in user specified directories, or in standard
652 /* We pass any -flto and -fwhopr flags on to the linker, which is expected
653 to understand them. In practice, this means it had better be collect2. */
654 #ifndef LINK_COMMAND_SPEC
655 #define LINK_COMMAND_SPEC "\
656 %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\
658 %{fuse-linker-plugin: \
659 -plugin %(linker_plugin_file) \
660 -plugin-opt=%(lto_wrapper) \
661 -plugin-opt=-fresolution=%u.res \
662 %{static|static-libgcc:-plugin-opt=-pass-through=%(lto_libgcc)} \
663 %{static:-plugin-opt=-pass-through=-lc} \
665 %{flto:%<fcompare-debug*} %{fwhopr*:%<fcompare-debug*} \
666 %{flto} %{fwhopr*} %l " LINK_PIE_SPEC \
667 "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\
668 %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\
669 %{static:} %{L*} %(mfwrap) %(link_libgcc) %o\
670 %{fopenmp|ftree-parallelize-loops=*:%:include(libgomp.spec)%(link_gomp)}\
671 %(mflib) " STACK_SPLIT_SPEC "\
672 %{fprofile-arcs|fprofile-generate*|coverage:-lgcov}\
673 %{!nostdlib:%{!nodefaultlibs:%(link_ssp) %(link_gcc_c_sequence)}}\
674 %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}"
677 #ifndef LINK_LIBGCC_SPEC
678 /* Generate -L options for startfile prefix list. */
679 # define LINK_LIBGCC_SPEC "%D"
682 #ifndef STARTFILE_PREFIX_SPEC
683 # define STARTFILE_PREFIX_SPEC ""
687 # define SYSROOT_SPEC "--sysroot=%R"
690 #ifndef SYSROOT_SUFFIX_SPEC
691 # define SYSROOT_SUFFIX_SPEC ""
694 #ifndef SYSROOT_HEADERS_SUFFIX_SPEC
695 # define SYSROOT_HEADERS_SUFFIX_SPEC ""
698 static const char *asm_debug;
699 static const char *cpp_spec = CPP_SPEC;
700 static const char *cc1_spec = CC1_SPEC;
701 static const char *cc1plus_spec = CC1PLUS_SPEC;
702 static const char *link_gcc_c_sequence_spec = LINK_GCC_C_SEQUENCE_SPEC;
703 static const char *link_ssp_spec = LINK_SSP_SPEC;
704 static const char *asm_spec = ASM_SPEC;
705 static const char *asm_final_spec = ASM_FINAL_SPEC;
706 static const char *link_spec = LINK_SPEC;
707 static const char *lib_spec = LIB_SPEC;
708 static const char *mfwrap_spec = MFWRAP_SPEC;
709 static const char *mflib_spec = MFLIB_SPEC;
710 static const char *link_gomp_spec = "";
711 static const char *libgcc_spec = LIBGCC_SPEC;
712 static const char *endfile_spec = ENDFILE_SPEC;
713 static const char *startfile_spec = STARTFILE_SPEC;
714 static const char *linker_name_spec = LINKER_NAME;
715 static const char *linker_plugin_file_spec = "";
716 static const char *lto_wrapper_spec = "";
717 static const char *lto_gcc_spec = "";
718 static const char *lto_libgcc_spec = "";
719 static const char *link_command_spec = LINK_COMMAND_SPEC;
720 static const char *link_libgcc_spec = LINK_LIBGCC_SPEC;
721 static const char *startfile_prefix_spec = STARTFILE_PREFIX_SPEC;
722 static const char *sysroot_spec = SYSROOT_SPEC;
723 static const char *sysroot_suffix_spec = SYSROOT_SUFFIX_SPEC;
724 static const char *sysroot_hdrs_suffix_spec = SYSROOT_HEADERS_SUFFIX_SPEC;
726 /* Standard options to cpp, cc1, and as, to reduce duplication in specs.
727 There should be no need to override these in target dependent files,
728 but we need to copy them to the specs file so that newer versions
729 of the GCC driver can correctly drive older tool chains with the
730 appropriate -B options. */
732 /* When cpplib handles traditional preprocessing, get rid of this, and
733 call cc1 (or cc1obj in objc/lang-specs.h) from the main specs so
734 that we default the front end language better. */
735 static const char *trad_capable_cpp =
736 "cc1 -E %{traditional|ftraditional|traditional-cpp:-traditional-cpp}";
738 /* We don't wrap .d files in %W{} since a missing .d file, and
739 therefore no dependency entry, confuses make into thinking a .o
740 file that happens to exist is up-to-date. */
741 static const char *cpp_unique_options =
742 "%{!Q:-quiet} %{nostdinc*} %{C} %{CC} %{v} %{I*&F*} %{P} %I\
743 %{MD:-MD %{!o:%b.d}%{o*:%.d%*}}\
744 %{MMD:-MMD %{!o:%b.d}%{o*:%.d%*}}\
745 %{M} %{MM} %{MF*} %{MG} %{MP} %{MQ*} %{MT*}\
746 %{!E:%{!M:%{!MM:%{!MT:%{!MQ:%{MD|MMD:%{o*:-MQ %*}}}}}}}\
747 %{remap} %{g3|ggdb3|gstabs3|gcoff3|gxcoff3|gvms3:-dD}\
748 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
749 %{H} %C %{D*&U*&A*} %{i*} %Z %i\
750 %{fmudflap:-D_MUDFLAP -include mf-runtime.h}\
751 %{fmudflapth:-D_MUDFLAP -D_MUDFLAPTH -include mf-runtime.h}\
754 /* This contains cpp options which are common with cc1_options and are passed
755 only when preprocessing only to avoid duplication. We pass the cc1 spec
756 options to the preprocessor so that it the cc1 spec may manipulate
757 options used to set target flags. Those special target flags settings may
758 in turn cause preprocessor symbols to be defined specially. */
759 static const char *cpp_options =
760 "%(cpp_unique_options) %1 %{m*} %{std*&ansi&trigraphs} %{W*&pedantic*} %{w}\
761 %{f*} %{g*:%{!g0:%{g*} %{!fno-working-directory:-fworking-directory}}} %{O*}\
762 %{undef} %{save-temps*:-fpch-preprocess}";
764 /* This contains cpp options which are not passed when the preprocessor
765 output will be used by another program. */
766 static const char *cpp_debug_options = "%{d*}";
768 /* NB: This is shared amongst all front-ends, except for Ada. */
769 static const char *cc1_options =
770 "%{pg:%{fomit-frame-pointer:%e-pg and -fomit-frame-pointer are incompatible}}\
771 %{!iplugindir*:%{fplugin*:%:find-plugindir()}}\
772 %1 %{!Q:-quiet} %{!dumpbase:-dumpbase %B} %{d*} %{m*} %{aux-info*}\
773 %{fcompare-debug-second:%:compare-debug-auxbase-opt(%b)} \
774 %{!fcompare-debug-second:%{c|S:%{o*:-auxbase-strip %*}%{!o*:-auxbase %b}}}%{!c:%{!S:-auxbase %b}} \
775 %{g*} %{O*} %{W*&pedantic*} %{w} %{std*&ansi&trigraphs}\
776 %{v:-version} %{pg:-p} %{p} %{f*} %{undef}\
777 %{Qn:-fno-ident} %{-help:--help}\
778 %{-target-help:--target-help}\
779 %{-version:--version}\
780 %{-help=*:--help=%*}\
781 %{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
782 %{fsyntax-only:-o %j} %{-param*}\
783 %{fmudflap|fmudflapth:-fno-builtin -fno-merge-constants}\
784 %{coverage:-fprofile-arcs -ftest-coverage}";
786 static const char *asm_options =
787 "%{--target-help:%:print-asm-header()} "
789 /* If GNU AS is used, then convert -w (no warnings), -I, and -v
790 to the assembler equivalents. */
791 "%{v} %{w:-W} %{I*} "
793 "%a %Y %{c:%W{o*}%{!o*:-o %w%b%O}}%{!c:-o %d%w%u%O}";
795 static const char *invoke_as =
796 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
798 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
799 %{!S:-o %|.s |\n as %(asm_options) %|.s %A }\
803 %{fcompare-debug=*|fdump-final-insns=*:%:compare-debug-dump-opt()}\
804 %{!S:-o %|.s |\n as %(asm_options) %m.s %A }\
808 /* Some compilers have limits on line lengths, and the multilib_select
809 and/or multilib_matches strings can be very long, so we build them at
811 static struct obstack multilib_obstack;
812 static const char *multilib_select;
813 static const char *multilib_matches;
814 static const char *multilib_defaults;
815 static const char *multilib_exclusions;
817 /* Check whether a particular argument is a default argument. */
819 #ifndef MULTILIB_DEFAULTS
820 #define MULTILIB_DEFAULTS { "" }
823 static const char *const multilib_defaults_raw[] = MULTILIB_DEFAULTS;
825 #ifndef DRIVER_SELF_SPECS
826 #define DRIVER_SELF_SPECS ""
829 /* Adding -fopenmp should imply pthreads. This is particularly important
830 for targets that use different start files and suchlike. */
831 #ifndef GOMP_SELF_SPECS
832 #define GOMP_SELF_SPECS "%{fopenmp|ftree-parallelize-loops=*: -pthread}"
835 static const char *const driver_self_specs[] = {
836 "%{fdump-final-insns:-fdump-final-insns=.} %<fdump-final-insns",
837 DRIVER_SELF_SPECS, CONFIGURE_SPECS, GOMP_SELF_SPECS
840 #ifndef OPTION_DEFAULT_SPECS
841 #define OPTION_DEFAULT_SPECS { "", "" }
850 static const struct default_spec
851 option_default_specs[] = { OPTION_DEFAULT_SPECS };
855 struct user_specs *next;
856 const char *filename;
859 static struct user_specs *user_specs_head, *user_specs_tail;
862 /* Record the mapping from file suffixes for compilation specs. */
866 const char *suffix; /* Use this compiler for input files
867 whose names end in this suffix. */
869 const char *spec; /* To use this compiler, run this spec. */
871 const char *cpp_spec; /* If non-NULL, substitute this spec
872 for `%C', rather than the usual
874 const int combinable; /* If nonzero, compiler can deal with
875 multiple source files at once (IMA). */
876 const int needs_preprocessing; /* If nonzero, source files need to
877 be run through a preprocessor. */
880 /* Pointer to a vector of `struct compiler' that gives the spec for
881 compiling a file, based on its suffix.
882 A file that does not end in any of these suffixes will be passed
883 unchanged to the loader and nothing else will be done to it.
885 An entry containing two 0s is used to terminate the vector.
887 If multiple entries match a file, the last matching one is used. */
889 static struct compiler *compilers;
891 /* Number of entries in `compilers', not counting the null terminator. */
893 static int n_compilers;
895 /* The default list of file name suffixes and their compilation specs. */
897 static const struct compiler default_compilers[] =
899 /* Add lists of suffixes of known languages here. If those languages
900 were not present when we built the driver, we will hit these copies
901 and be given a more meaningful error than "file not used since
902 linking is not done". */
903 {".m", "#Objective-C", 0, 0, 0}, {".mi", "#Objective-C", 0, 0, 0},
904 {".mm", "#Objective-C++", 0, 0, 0}, {".M", "#Objective-C++", 0, 0, 0},
905 {".mii", "#Objective-C++", 0, 0, 0},
906 {".cc", "#C++", 0, 0, 0}, {".cxx", "#C++", 0, 0, 0},
907 {".cpp", "#C++", 0, 0, 0}, {".cp", "#C++", 0, 0, 0},
908 {".c++", "#C++", 0, 0, 0}, {".C", "#C++", 0, 0, 0},
909 {".CPP", "#C++", 0, 0, 0}, {".ii", "#C++", 0, 0, 0},
910 {".ads", "#Ada", 0, 0, 0}, {".adb", "#Ada", 0, 0, 0},
911 {".f", "#Fortran", 0, 0, 0}, {".F", "#Fortran", 0, 0, 0},
912 {".for", "#Fortran", 0, 0, 0}, {".FOR", "#Fortran", 0, 0, 0},
913 {".ftn", "#Fortran", 0, 0, 0}, {".FTN", "#Fortran", 0, 0, 0},
914 {".fpp", "#Fortran", 0, 0, 0}, {".FPP", "#Fortran", 0, 0, 0},
915 {".f90", "#Fortran", 0, 0, 0}, {".F90", "#Fortran", 0, 0, 0},
916 {".f95", "#Fortran", 0, 0, 0}, {".F95", "#Fortran", 0, 0, 0},
917 {".f03", "#Fortran", 0, 0, 0}, {".F03", "#Fortran", 0, 0, 0},
918 {".f08", "#Fortran", 0, 0, 0}, {".F08", "#Fortran", 0, 0, 0},
919 {".r", "#Ratfor", 0, 0, 0},
920 {".p", "#Pascal", 0, 0, 0}, {".pas", "#Pascal", 0, 0, 0},
921 {".java", "#Java", 0, 0, 0}, {".class", "#Java", 0, 0, 0},
922 {".zip", "#Java", 0, 0, 0}, {".jar", "#Java", 0, 0, 0},
923 /* Next come the entries for C. */
924 {".c", "@c", 0, 0, 1},
926 /* cc1 has an integrated ISO C preprocessor. We should invoke the
927 external preprocessor if -save-temps is given. */
928 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
930 %{traditional|ftraditional:\
931 %eGNU C no longer supports -traditional without -E}\
932 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
933 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
934 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
936 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
937 cc1 %(cpp_unique_options) %(cc1_options)}}}\
938 %{!fsyntax-only:%(invoke_as)}}}}", 0, 0, 1},
940 "%{!E:%e-E or -x required when input is from standard input}\
941 %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)", 0, 0, 0},
942 {".h", "@c-header", 0, 0, 0},
944 /* cc1 has an integrated ISO C preprocessor. We should invoke the
945 external preprocessor if -save-temps is given. */
946 "%{E|M|MM:%(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}\
948 %{save-temps*|traditional-cpp|no-integrated-cpp:%(trad_capable_cpp) \
949 %(cpp_options) -o %{save-temps*:%b.i} %{!save-temps*:%g.i} \n\
950 cc1 -fpreprocessed %{save-temps*:%b.i} %{!save-temps*:%g.i} \
952 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
953 %W{o*:--output-pch=%*}}%V}\
954 %{!save-temps*:%{!traditional-cpp:%{!no-integrated-cpp:\
955 cc1 %(cpp_unique_options) %(cc1_options)\
956 %{!fdump-ada-spec*:-o %g.s %{!o*:--output-pch=%i.gch}\
957 %W{o*:--output-pch=%*}}%V}}}}}}", 0, 0, 0},
958 {".i", "@cpp-output", 0, 0, 0},
960 "%{!M:%{!MM:%{!E:cc1 -fpreprocessed %i %(cc1_options) %{!fsyntax-only:%(invoke_as)}}}}", 0, 1, 0},
961 {".s", "@assembler", 0, 1, 0},
963 "%{!M:%{!MM:%{!E:%{!S:as %(asm_debug) %(asm_options) %i %A }}}}", 0, 1, 0},
964 {".sx", "@assembler-with-cpp", 0, 1, 0},
965 {".S", "@assembler-with-cpp", 0, 1, 0},
966 {"@assembler-with-cpp",
967 #ifdef AS_NEEDS_DASH_FOR_PIPED_INPUT
968 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
969 %{E|M|MM:%(cpp_debug_options)}\
970 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
971 as %(asm_debug) %(asm_options) %|.s %A }}}}"
973 "%(trad_capable_cpp) -lang-asm %(cpp_options) -fno-directives-only\
974 %{E|M|MM:%(cpp_debug_options)}\
975 %{!M:%{!MM:%{!E:%{!S:-o %|.s |\n\
976 as %(asm_debug) %(asm_options) %m.s %A }}}}"
981 /* Mark end of table. */
985 /* Number of elements in default_compilers, not counting the terminator. */
987 static const int n_default_compilers = ARRAY_SIZE (default_compilers) - 1;
989 /* A vector of options to give to the linker.
990 These options are accumulated by %x,
991 and substituted into the linker command with %X. */
992 static int n_linker_options;
993 static char **linker_options;
995 /* A vector of options to give to the assembler.
996 These options are accumulated by -Wa,
997 and substituted into the assembler command with %Y. */
998 static int n_assembler_options;
999 static char **assembler_options;
1001 /* A vector of options to give to the preprocessor.
1002 These options are accumulated by -Wp,
1003 and substituted into the preprocessor command with %Z. */
1004 static int n_preprocessor_options;
1005 static char **preprocessor_options;
1008 skip_whitespace (char *p)
1012 /* A fully-blank line is a delimiter in the SPEC file and shouldn't
1013 be considered whitespace. */
1014 if (p[0] == '\n' && p[1] == '\n' && p[2] == '\n')
1016 else if (*p == '\n' || *p == ' ' || *p == '\t')
1030 /* Structures to keep track of prefixes to try when looking for files. */
1034 const char *prefix; /* String to prepend to the path. */
1035 struct prefix_list *next; /* Next in linked list. */
1036 int require_machine_suffix; /* Don't use without machine_suffix. */
1037 /* 2 means try both machine_suffix and just_machine_suffix. */
1038 int priority; /* Sort key - priority within list. */
1039 int os_multilib; /* 1 if OS multilib scheme should be used,
1040 0 for GCC multilib scheme. */
1045 struct prefix_list *plist; /* List of prefixes to try */
1046 int max_len; /* Max length of a prefix in PLIST */
1047 const char *name; /* Name of this list (used in config stuff) */
1050 /* List of prefixes to try when looking for executables. */
1052 static struct path_prefix exec_prefixes = { 0, 0, "exec" };
1054 /* List of prefixes to try when looking for startup (crt0) files. */
1056 static struct path_prefix startfile_prefixes = { 0, 0, "startfile" };
1058 /* List of prefixes to try when looking for include files. */
1060 static struct path_prefix include_prefixes = { 0, 0, "include" };
1062 /* Suffix to attach to directories searched for commands.
1063 This looks like `MACHINE/VERSION/'. */
1065 static const char *machine_suffix = 0;
1067 /* Suffix to attach to directories searched for commands.
1068 This is just `MACHINE/'. */
1070 static const char *just_machine_suffix = 0;
1072 /* Adjusted value of GCC_EXEC_PREFIX envvar. */
1074 static const char *gcc_exec_prefix;
1076 /* Adjusted value of standard_libexec_prefix. */
1078 static const char *gcc_libexec_prefix;
1080 /* Default prefixes to attach to command names. */
1082 #ifndef STANDARD_STARTFILE_PREFIX_1
1083 #define STANDARD_STARTFILE_PREFIX_1 "/lib/"
1085 #ifndef STANDARD_STARTFILE_PREFIX_2
1086 #define STANDARD_STARTFILE_PREFIX_2 "/usr/lib/"
1089 #ifdef CROSS_DIRECTORY_STRUCTURE /* Don't use these prefixes for a cross compiler. */
1090 #undef MD_EXEC_PREFIX
1091 #undef MD_STARTFILE_PREFIX
1092 #undef MD_STARTFILE_PREFIX_1
1095 /* If no prefixes defined, use the null string, which will disable them. */
1096 #ifndef MD_EXEC_PREFIX
1097 #define MD_EXEC_PREFIX ""
1099 #ifndef MD_STARTFILE_PREFIX
1100 #define MD_STARTFILE_PREFIX ""
1102 #ifndef MD_STARTFILE_PREFIX_1
1103 #define MD_STARTFILE_PREFIX_1 ""
1106 /* These directories are locations set at configure-time based on the
1107 --prefix option provided to configure. Their initializers are
1108 defined in Makefile.in. These paths are not *directly* used when
1109 gcc_exec_prefix is set because, in that case, we know where the
1110 compiler has been installed, and use paths relative to that
1111 location instead. */
1112 static const char *const standard_exec_prefix = STANDARD_EXEC_PREFIX;
1113 static const char *const standard_libexec_prefix = STANDARD_LIBEXEC_PREFIX;
1114 static const char *const standard_bindir_prefix = STANDARD_BINDIR_PREFIX;
1115 static const char *const standard_startfile_prefix = STANDARD_STARTFILE_PREFIX;
1117 /* For native compilers, these are well-known paths containing
1118 components that may be provided by the system. For cross
1119 compilers, these paths are not used. */
1120 static const char *md_exec_prefix = MD_EXEC_PREFIX;
1121 static const char *md_startfile_prefix = MD_STARTFILE_PREFIX;
1122 static const char *md_startfile_prefix_1 = MD_STARTFILE_PREFIX_1;
1123 static const char *const standard_startfile_prefix_1
1124 = STANDARD_STARTFILE_PREFIX_1;
1125 static const char *const standard_startfile_prefix_2
1126 = STANDARD_STARTFILE_PREFIX_2;
1128 /* A relative path to be used in finding the location of tools
1129 relative to the driver. */
1130 static const char *const tooldir_base_prefix = TOOLDIR_BASE_PREFIX;
1132 /* Subdirectory to use for locating libraries. Set by
1133 set_multilib_dir based on the compilation options. */
1135 static const char *multilib_dir;
1137 /* Subdirectory to use for locating libraries in OS conventions. Set by
1138 set_multilib_dir based on the compilation options. */
1140 static const char *multilib_os_dir;
1142 /* Structure to keep track of the specs that have been defined so far.
1143 These are accessed using %(specname) or %[specname] in a compiler
1148 /* The following 2 fields must be first */
1149 /* to allow EXTRA_SPECS to be initialized */
1150 const char *name; /* name of the spec. */
1151 const char *ptr; /* available ptr if no static pointer */
1153 /* The following fields are not initialized */
1154 /* by EXTRA_SPECS */
1155 const char **ptr_spec; /* pointer to the spec itself. */
1156 struct spec_list *next; /* Next spec in linked list. */
1157 int name_len; /* length of the name */
1158 int alloc_p; /* whether string was allocated */
1161 #define INIT_STATIC_SPEC(NAME,PTR) \
1162 { NAME, NULL, PTR, (struct spec_list *) 0, sizeof (NAME) - 1, 0 }
1164 /* List of statically defined specs. */
1165 static struct spec_list static_specs[] =
1167 INIT_STATIC_SPEC ("asm", &asm_spec),
1168 INIT_STATIC_SPEC ("asm_debug", &asm_debug),
1169 INIT_STATIC_SPEC ("asm_final", &asm_final_spec),
1170 INIT_STATIC_SPEC ("asm_options", &asm_options),
1171 INIT_STATIC_SPEC ("invoke_as", &invoke_as),
1172 INIT_STATIC_SPEC ("cpp", &cpp_spec),
1173 INIT_STATIC_SPEC ("cpp_options", &cpp_options),
1174 INIT_STATIC_SPEC ("cpp_debug_options", &cpp_debug_options),
1175 INIT_STATIC_SPEC ("cpp_unique_options", &cpp_unique_options),
1176 INIT_STATIC_SPEC ("trad_capable_cpp", &trad_capable_cpp),
1177 INIT_STATIC_SPEC ("cc1", &cc1_spec),
1178 INIT_STATIC_SPEC ("cc1_options", &cc1_options),
1179 INIT_STATIC_SPEC ("cc1plus", &cc1plus_spec),
1180 INIT_STATIC_SPEC ("link_gcc_c_sequence", &link_gcc_c_sequence_spec),
1181 INIT_STATIC_SPEC ("link_ssp", &link_ssp_spec),
1182 INIT_STATIC_SPEC ("endfile", &endfile_spec),
1183 INIT_STATIC_SPEC ("link", &link_spec),
1184 INIT_STATIC_SPEC ("lib", &lib_spec),
1185 INIT_STATIC_SPEC ("mfwrap", &mfwrap_spec),
1186 INIT_STATIC_SPEC ("mflib", &mflib_spec),
1187 INIT_STATIC_SPEC ("link_gomp", &link_gomp_spec),
1188 INIT_STATIC_SPEC ("libgcc", &libgcc_spec),
1189 INIT_STATIC_SPEC ("startfile", &startfile_spec),
1190 INIT_STATIC_SPEC ("cross_compile", &cross_compile),
1191 INIT_STATIC_SPEC ("version", &compiler_version),
1192 INIT_STATIC_SPEC ("multilib", &multilib_select),
1193 INIT_STATIC_SPEC ("multilib_defaults", &multilib_defaults),
1194 INIT_STATIC_SPEC ("multilib_extra", &multilib_extra),
1195 INIT_STATIC_SPEC ("multilib_matches", &multilib_matches),
1196 INIT_STATIC_SPEC ("multilib_exclusions", &multilib_exclusions),
1197 INIT_STATIC_SPEC ("multilib_options", &multilib_options),
1198 INIT_STATIC_SPEC ("linker", &linker_name_spec),
1199 INIT_STATIC_SPEC ("linker_plugin_file", &linker_plugin_file_spec),
1200 INIT_STATIC_SPEC ("lto_wrapper", <o_wrapper_spec),
1201 INIT_STATIC_SPEC ("lto_gcc", <o_gcc_spec),
1202 INIT_STATIC_SPEC ("lto_libgcc", <o_libgcc_spec),
1203 INIT_STATIC_SPEC ("link_libgcc", &link_libgcc_spec),
1204 INIT_STATIC_SPEC ("md_exec_prefix", &md_exec_prefix),
1205 INIT_STATIC_SPEC ("md_startfile_prefix", &md_startfile_prefix),
1206 INIT_STATIC_SPEC ("md_startfile_prefix_1", &md_startfile_prefix_1),
1207 INIT_STATIC_SPEC ("startfile_prefix_spec", &startfile_prefix_spec),
1208 INIT_STATIC_SPEC ("sysroot_spec", &sysroot_spec),
1209 INIT_STATIC_SPEC ("sysroot_suffix_spec", &sysroot_suffix_spec),
1210 INIT_STATIC_SPEC ("sysroot_hdrs_suffix_spec", &sysroot_hdrs_suffix_spec),
1213 #ifdef EXTRA_SPECS /* additional specs needed */
1214 /* Structure to keep track of just the first two args of a spec_list.
1215 That is all that the EXTRA_SPECS macro gives us. */
1218 const char *const name;
1219 const char *const ptr;
1222 static const struct spec_list_1 extra_specs_1[] = { EXTRA_SPECS };
1223 static struct spec_list *extra_specs = (struct spec_list *) 0;
1226 /* List of dynamically allocates specs that have been defined so far. */
1228 static struct spec_list *specs = (struct spec_list *) 0;
1230 /* List of static spec functions. */
1232 static const struct spec_function static_spec_functions[] =
1234 { "getenv", getenv_spec_function },
1235 { "if-exists", if_exists_spec_function },
1236 { "if-exists-else", if_exists_else_spec_function },
1237 { "replace-outfile", replace_outfile_spec_function },
1238 { "remove-outfile", remove_outfile_spec_function },
1239 { "version-compare", version_compare_spec_function },
1240 { "include", include_spec_function },
1241 { "find-file", find_file_spec_function },
1242 { "find-plugindir", find_plugindir_spec_function },
1243 { "print-asm-header", print_asm_header_spec_function },
1244 { "compare-debug-dump-opt", compare_debug_dump_opt_spec_function },
1245 { "compare-debug-self-opt", compare_debug_self_opt_spec_function },
1246 { "compare-debug-auxbase-opt", compare_debug_auxbase_opt_spec_function },
1247 #ifdef EXTRA_SPEC_FUNCTIONS
1248 EXTRA_SPEC_FUNCTIONS
1253 static int processing_spec_function;
1255 /* Add appropriate libgcc specs to OBSTACK, taking into account
1256 various permutations of -shared-libgcc, -shared, and such. */
1258 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1260 #ifndef USE_LD_AS_NEEDED
1261 #define USE_LD_AS_NEEDED 0
1265 init_gcc_specs (struct obstack *obstack, const char *shared_name,
1266 const char *static_name, const char *eh_name)
1270 buf = concat ("%{static|static-libgcc:", static_name, " ", eh_name, "}"
1271 "%{!static:%{!static-libgcc:"
1272 #if USE_LD_AS_NEEDED
1273 "%{!shared-libgcc:",
1274 static_name, " --as-needed ", shared_name, " --no-as-needed"
1277 shared_name, "%{!shared: ", static_name, "}"
1281 "%{!shared-libgcc:", static_name, " ", eh_name, "}"
1282 "%{shared-libgcc:", shared_name, " ", static_name, "}"
1286 "%{shared-libgcc:", shared_name, "}"
1287 "%{!shared-libgcc:", static_name, "}"
1290 "%{shared:", shared_name, "}"
1295 obstack_grow (obstack, buf, strlen (buf));
1298 #endif /* ENABLE_SHARED_LIBGCC */
1300 /* Initialize the specs lookup routines. */
1305 struct spec_list *next = (struct spec_list *) 0;
1306 struct spec_list *sl = (struct spec_list *) 0;
1310 return; /* Already initialized. */
1313 fnotice (stderr, "Using built-in specs.\n");
1316 extra_specs = XCNEWVEC (struct spec_list, ARRAY_SIZE (extra_specs_1));
1318 for (i = ARRAY_SIZE (extra_specs_1) - 1; i >= 0; i--)
1320 sl = &extra_specs[i];
1321 sl->name = extra_specs_1[i].name;
1322 sl->ptr = extra_specs_1[i].ptr;
1324 sl->name_len = strlen (sl->name);
1325 sl->ptr_spec = &sl->ptr;
1330 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1332 sl = &static_specs[i];
1337 #if defined(ENABLE_SHARED_LIBGCC) && !defined(REAL_LIBGCC_SPEC)
1338 /* ??? If neither -shared-libgcc nor --static-libgcc was
1339 seen, then we should be making an educated guess. Some proposed
1340 heuristics for ELF include:
1342 (1) If "-Wl,--export-dynamic", then it's a fair bet that the
1343 program will be doing dynamic loading, which will likely
1344 need the shared libgcc.
1346 (2) If "-ldl", then it's also a fair bet that we're doing
1349 (3) For each ET_DYN we're linking against (either through -lfoo
1350 or /some/path/foo.so), check to see whether it or one of
1351 its dependencies depends on a shared libgcc.
1355 If the runtime is fixed to look for program headers instead
1356 of calling __register_frame_info at all, for each object,
1357 use the shared libgcc if any EH symbol referenced.
1359 If crtstuff is fixed to not invoke __register_frame_info
1360 automatically, for each object, use the shared libgcc if
1361 any non-empty unwind section found.
1363 Doing any of this probably requires invoking an external program to
1364 do the actual object file scanning. */
1366 const char *p = libgcc_spec;
1369 /* Transform the extant libgcc_spec into one that uses the shared libgcc
1370 when given the proper command line arguments. */
1373 if (in_sep && *p == '-' && strncmp (p, "-lgcc", 5) == 0)
1375 init_gcc_specs (&obstack,
1377 #ifdef USE_LIBUNWIND_EXCEPTIONS
1383 #ifdef USE_LIBUNWIND_EXCEPTIONS
1384 # ifdef HAVE_LD_STATIC_DYNAMIC
1385 " %{!static:-Bstatic} -lunwind %{!static:-Bdynamic}"
1395 else if (in_sep && *p == 'l' && strncmp (p, "libgcc.a%s", 10) == 0)
1397 /* Ug. We don't know shared library extensions. Hope that
1398 systems that use this form don't do shared libraries. */
1399 init_gcc_specs (&obstack,
1403 #ifdef USE_LIBUNWIND_EXCEPTIONS
1412 obstack_1grow (&obstack, *p);
1413 in_sep = (*p == ' ');
1418 obstack_1grow (&obstack, '\0');
1419 libgcc_spec = XOBFINISH (&obstack, const char *);
1422 #ifdef USE_AS_TRADITIONAL_FORMAT
1423 /* Prepend "--traditional-format" to whatever asm_spec we had before. */
1425 static const char tf[] = "--traditional-format ";
1426 obstack_grow (&obstack, tf, sizeof(tf) - 1);
1427 obstack_grow0 (&obstack, asm_spec, strlen (asm_spec));
1428 asm_spec = XOBFINISH (&obstack, const char *);
1432 #if defined LINK_EH_SPEC || defined LINK_BUILDID_SPEC
1433 # ifdef LINK_BUILDID_SPEC
1434 /* Prepend LINK_BUILDID_SPEC to whatever link_spec we had before. */
1435 obstack_grow (&obstack, LINK_BUILDID_SPEC, sizeof(LINK_BUILDID_SPEC) - 1);
1437 # ifdef LINK_EH_SPEC
1438 /* Prepend LINK_EH_SPEC to whatever link_spec we had before. */
1439 obstack_grow (&obstack, LINK_EH_SPEC, sizeof(LINK_EH_SPEC) - 1);
1441 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
1442 link_spec = XOBFINISH (&obstack, const char *);
1448 /* Change the value of spec NAME to SPEC. If SPEC is empty, then the spec is
1449 removed; If the spec starts with a + then SPEC is added to the end of the
1453 set_spec (const char *name, const char *spec)
1455 struct spec_list *sl;
1456 const char *old_spec;
1457 int name_len = strlen (name);
1460 /* If this is the first call, initialize the statically allocated specs. */
1463 struct spec_list *next = (struct spec_list *) 0;
1464 for (i = ARRAY_SIZE (static_specs) - 1; i >= 0; i--)
1466 sl = &static_specs[i];
1473 /* See if the spec already exists. */
1474 for (sl = specs; sl; sl = sl->next)
1475 if (name_len == sl->name_len && !strcmp (sl->name, name))
1480 /* Not found - make it. */
1481 sl = XNEW (struct spec_list);
1482 sl->name = xstrdup (name);
1483 sl->name_len = name_len;
1484 sl->ptr_spec = &sl->ptr;
1486 *(sl->ptr_spec) = "";
1491 old_spec = *(sl->ptr_spec);
1492 *(sl->ptr_spec) = ((spec[0] == '+' && ISSPACE ((unsigned char)spec[1]))
1493 ? concat (old_spec, spec + 1, NULL)
1498 fnotice (stderr, "Setting spec %s to '%s'\n\n", name, *(sl->ptr_spec));
1501 /* Free the old spec. */
1502 if (old_spec && sl->alloc_p)
1503 free (CONST_CAST(char *, old_spec));
1508 /* Accumulate a command (program name and args), and run it. */
1510 /* Vector of pointers to arguments in the current line of specifications. */
1512 static const char **argbuf;
1514 /* Number of elements allocated in argbuf. */
1516 static int argbuf_length;
1518 /* Number of elements in argbuf currently in use (containing args). */
1520 static int argbuf_index;
1522 /* Position in the argbuf array containing the name of the output file
1523 (the value associated with the "-o" flag). */
1525 static int have_o_argbuf_index = 0;
1527 /* Were the options -c, -S or -E passed. */
1528 static int have_c = 0;
1530 /* Was the option -o passed. */
1531 static int have_o = 0;
1533 /* This is the list of suffixes and codes (%g/%u/%U/%j) and the associated
1534 temp file. If the HOST_BIT_BUCKET is used for %j, no entry is made for
1537 static struct temp_name {
1538 const char *suffix; /* suffix associated with the code. */
1539 int length; /* strlen (suffix). */
1540 int unique; /* Indicates whether %g or %u/%U was used. */
1541 const char *filename; /* associated filename. */
1542 int filename_length; /* strlen (filename). */
1543 struct temp_name *next;
1546 /* Number of commands executed so far. */
1548 static int execution_count;
1550 /* Number of commands that exited with a signal. */
1552 static int signal_count;
1554 /* Allocate the argument vector. */
1560 argbuf = XNEWVEC (const char *, argbuf_length);
1563 /* Clear out the vector of arguments (after a command is executed). */
1571 /* Add one argument to the vector at the end.
1572 This is done when a space is seen or at the end of the line.
1573 If DELETE_ALWAYS is nonzero, the arg is a filename
1574 and the file should be deleted eventually.
1575 If DELETE_FAILURE is nonzero, the arg is a filename
1576 and the file should be deleted if this compilation fails. */
1579 store_arg (const char *arg, int delete_always, int delete_failure)
1581 if (argbuf_index + 1 == argbuf_length)
1582 argbuf = XRESIZEVEC (const char *, argbuf, (argbuf_length *= 2));
1584 argbuf[argbuf_index++] = arg;
1585 argbuf[argbuf_index] = 0;
1587 if (strcmp (arg, "-o") == 0)
1588 have_o_argbuf_index = argbuf_index;
1589 if (delete_always || delete_failure)
1592 /* If the temporary file we should delete is specified as
1593 part of a joined argument extract the filename. */
1595 && (p = strrchr (arg, '=')))
1597 record_temp_file (arg, delete_always, delete_failure);
1601 /* Load specs from a file name named FILENAME, replacing occurrences of
1602 various different types of line-endings, \r\n, \n\r and just \r, with
1606 load_specs (const char *filename)
1610 struct stat statbuf;
1617 fnotice (stderr, "Reading specs from %s\n", filename);
1619 /* Open and stat the file. */
1620 desc = open (filename, O_RDONLY, 0);
1622 pfatal_with_name (filename);
1623 if (stat (filename, &statbuf) < 0)
1624 pfatal_with_name (filename);
1626 /* Read contents of file into BUFFER. */
1627 buffer = XNEWVEC (char, statbuf.st_size + 1);
1628 readlen = read (desc, buffer, (unsigned) statbuf.st_size);
1630 pfatal_with_name (filename);
1631 buffer[readlen] = 0;
1634 specs = XNEWVEC (char, readlen + 1);
1636 for (buffer_p = buffer; buffer_p && *buffer_p; buffer_p++)
1642 if (buffer_p > buffer && *(buffer_p - 1) == '\n') /* \n\r */
1644 else if (*(buffer_p + 1) == '\n') /* \r\n */
1658 /* Read compilation specs from a file named FILENAME,
1659 replacing the default ones.
1661 A suffix which starts with `*' is a definition for
1662 one of the machine-specific sub-specs. The "suffix" should be
1663 *asm, *cc1, *cpp, *link, *startfile, etc.
1664 The corresponding spec is stored in asm_spec, etc.,
1665 rather than in the `compilers' vector.
1667 Anything invalid in the file is a fatal error. */
1670 read_specs (const char *filename, int main_p)
1675 buffer = load_specs (filename);
1677 /* Scan BUFFER for specs, putting them in the vector. */
1683 char *in, *out, *p1, *p2, *p3;
1685 /* Advance P in BUFFER to the next nonblank nocomment line. */
1686 p = skip_whitespace (p);
1690 /* Is this a special command that starts with '%'? */
1691 /* Don't allow this for the main specs file, since it would
1692 encourage people to overwrite it. */
1693 if (*p == '%' && !main_p)
1696 while (*p && *p != '\n')
1702 if (!strncmp (p1, "%include", sizeof ("%include") - 1)
1703 && (p1[sizeof "%include" - 1] == ' '
1704 || p1[sizeof "%include" - 1] == '\t'))
1708 p1 += sizeof ("%include");
1709 while (*p1 == ' ' || *p1 == '\t')
1712 if (*p1++ != '<' || p[-2] != '>')
1713 fatal_error ("specs %%include syntax malformed after "
1715 (long) (p1 - buffer + 1));
1718 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1719 read_specs (new_filename ? new_filename : p1, FALSE);
1722 else if (!strncmp (p1, "%include_noerr", sizeof "%include_noerr" - 1)
1723 && (p1[sizeof "%include_noerr" - 1] == ' '
1724 || p1[sizeof "%include_noerr" - 1] == '\t'))
1728 p1 += sizeof "%include_noerr";
1729 while (*p1 == ' ' || *p1 == '\t')
1732 if (*p1++ != '<' || p[-2] != '>')
1733 fatal_error ("specs %%include syntax malformed after "
1735 (long) (p1 - buffer + 1));
1738 new_filename = find_a_file (&startfile_prefixes, p1, R_OK, true);
1740 read_specs (new_filename, FALSE);
1741 else if (verbose_flag)
1742 fnotice (stderr, "could not find specs file %s\n", p1);
1745 else if (!strncmp (p1, "%rename", sizeof "%rename" - 1)
1746 && (p1[sizeof "%rename" - 1] == ' '
1747 || p1[sizeof "%rename" - 1] == '\t'))
1750 struct spec_list *sl;
1751 struct spec_list *newsl;
1753 /* Get original name. */
1754 p1 += sizeof "%rename";
1755 while (*p1 == ' ' || *p1 == '\t')
1758 if (! ISALPHA ((unsigned char) *p1))
1759 fatal_error ("specs %%rename syntax malformed after "
1761 (long) (p1 - buffer));
1764 while (*p2 && !ISSPACE ((unsigned char) *p2))
1767 if (*p2 != ' ' && *p2 != '\t')
1768 fatal_error ("specs %%rename syntax malformed after "
1770 (long) (p2 - buffer));
1774 while (*p2 == ' ' || *p2 == '\t')
1777 if (! ISALPHA ((unsigned char) *p2))
1778 fatal_error ("specs %%rename syntax malformed after "
1780 (long) (p2 - buffer));
1782 /* Get new spec name. */
1784 while (*p3 && !ISSPACE ((unsigned char) *p3))
1788 fatal_error ("specs %%rename syntax malformed after "
1790 (long) (p3 - buffer));
1793 for (sl = specs; sl; sl = sl->next)
1794 if (name_len == sl->name_len && !strcmp (sl->name, p1))
1798 fatal_error ("specs %s spec was not found to be renamed", p1);
1800 if (strcmp (p1, p2) == 0)
1803 for (newsl = specs; newsl; newsl = newsl->next)
1804 if (strcmp (newsl->name, p2) == 0)
1805 fatal_error ("%s: attempt to rename spec %qs to "
1806 "already defined spec %qs",
1811 fnotice (stderr, "rename spec %s to %s\n", p1, p2);
1813 fnotice (stderr, "spec is '%s'\n\n", *(sl->ptr_spec));
1817 set_spec (p2, *(sl->ptr_spec));
1819 free (CONST_CAST (char *, *(sl->ptr_spec)));
1821 *(sl->ptr_spec) = "";
1826 fatal_error ("specs unknown %% command after %ld characters",
1827 (long) (p1 - buffer));
1830 /* Find the colon that should end the suffix. */
1832 while (*p1 && *p1 != ':' && *p1 != '\n')
1835 /* The colon shouldn't be missing. */
1837 fatal_error ("specs file malformed after %ld characters",
1838 (long) (p1 - buffer));
1840 /* Skip back over trailing whitespace. */
1842 while (p2 > buffer && (p2[-1] == ' ' || p2[-1] == '\t'))
1845 /* Copy the suffix to a string. */
1846 suffix = save_string (p, p2 - p);
1847 /* Find the next line. */
1848 p = skip_whitespace (p1 + 1);
1850 fatal_error ("specs file malformed after %ld characters",
1851 (long) (p - buffer));
1854 /* Find next blank line or end of string. */
1855 while (*p1 && !(*p1 == '\n' && (p1[1] == '\n' || p1[1] == '\0')))
1858 /* Specs end at the blank line and do not include the newline. */
1859 spec = save_string (p, p1 - p);
1862 /* Delete backslash-newline sequences from the spec. */
1867 if (in[0] == '\\' && in[1] == '\n')
1869 else if (in[0] == '#')
1870 while (*in && *in != '\n')
1878 if (suffix[0] == '*')
1880 if (! strcmp (suffix, "*link_command"))
1881 link_command_spec = spec;
1883 set_spec (suffix + 1, spec);
1887 /* Add this pair to the vector. */
1889 = XRESIZEVEC (struct compiler, compilers, n_compilers + 2);
1891 compilers[n_compilers].suffix = suffix;
1892 compilers[n_compilers].spec = spec;
1894 memset (&compilers[n_compilers], 0, sizeof compilers[n_compilers]);
1898 link_command_spec = spec;
1901 if (link_command_spec == 0)
1902 fatal_error ("spec file has no spec for linking");
1905 /* Record the names of temporary files we tell compilers to write,
1906 and delete them at the end of the run. */
1908 /* This is the common prefix we use to make temp file names.
1909 It is chosen once for each run of this program.
1910 It is substituted into a spec by %g or %j.
1911 Thus, all temp file names contain this prefix.
1912 In practice, all temp file names start with this prefix.
1914 This prefix comes from the envvar TMPDIR if it is defined;
1915 otherwise, from the P_tmpdir macro if that is defined;
1916 otherwise, in /usr/tmp or /tmp;
1917 or finally the current directory if all else fails. */
1919 static const char *temp_filename;
1921 /* Length of the prefix. */
1923 static int temp_filename_length;
1925 /* Define the list of temporary files to delete. */
1930 struct temp_file *next;
1933 /* Queue of files to delete on success or failure of compilation. */
1934 static struct temp_file *always_delete_queue;
1935 /* Queue of files to delete on failure of compilation. */
1936 static struct temp_file *failure_delete_queue;
1938 /* Record FILENAME as a file to be deleted automatically.
1939 ALWAYS_DELETE nonzero means delete it if all compilation succeeds;
1940 otherwise delete it in any case.
1941 FAIL_DELETE nonzero means delete it if a compilation step fails;
1942 otherwise delete it in any case. */
1945 record_temp_file (const char *filename, int always_delete, int fail_delete)
1947 char *const name = xstrdup (filename);
1951 struct temp_file *temp;
1952 for (temp = always_delete_queue; temp; temp = temp->next)
1953 if (! strcmp (name, temp->name))
1956 temp = XNEW (struct temp_file);
1957 temp->next = always_delete_queue;
1959 always_delete_queue = temp;
1966 struct temp_file *temp;
1967 for (temp = failure_delete_queue; temp; temp = temp->next)
1968 if (! strcmp (name, temp->name))
1971 temp = XNEW (struct temp_file);
1972 temp->next = failure_delete_queue;
1974 failure_delete_queue = temp;
1980 /* Delete all the temporary files whose names we previously recorded. */
1982 #ifndef DELETE_IF_ORDINARY
1983 #define DELETE_IF_ORDINARY(NAME,ST,VERBOSE_FLAG) \
1986 if (stat (NAME, &ST) >= 0 && S_ISREG (ST.st_mode)) \
1987 if (unlink (NAME) < 0) \
1989 perror_with_name (NAME); \
1994 delete_if_ordinary (const char *name)
2000 printf ("Delete %s? (y or n) ", name);
2004 while ((c = getchar ()) != '\n' && c != EOF)
2007 if (i == 'y' || i == 'Y')
2009 DELETE_IF_ORDINARY (name, st, verbose_flag);
2013 delete_temp_files (void)
2015 struct temp_file *temp;
2017 for (temp = always_delete_queue; temp; temp = temp->next)
2018 delete_if_ordinary (temp->name);
2019 always_delete_queue = 0;
2022 /* Delete all the files to be deleted on error. */
2025 delete_failure_queue (void)
2027 struct temp_file *temp;
2029 for (temp = failure_delete_queue; temp; temp = temp->next)
2030 delete_if_ordinary (temp->name);
2034 clear_failure_queue (void)
2036 failure_delete_queue = 0;
2039 /* Call CALLBACK for each path in PATHS, breaking out early if CALLBACK
2041 If DO_MULTI is true iterate over the paths twice, first with multilib
2042 suffix then without, otherwise iterate over the paths once without
2043 adding a multilib suffix. When DO_MULTI is true, some attempt is made
2044 to avoid visiting the same path twice, but we could do better. For
2045 instance, /usr/lib/../lib is considered different from /usr/lib.
2046 At least EXTRA_SPACE chars past the end of the path passed to
2047 CALLBACK are available for use by the callback.
2048 CALLBACK_INFO allows extra parameters to be passed to CALLBACK.
2050 Returns the value returned by CALLBACK. */
2053 for_each_path (const struct path_prefix *paths,
2056 void *(*callback) (char *, void *),
2057 void *callback_info)
2059 struct prefix_list *pl;
2060 const char *multi_dir = NULL;
2061 const char *multi_os_dir = NULL;
2062 const char *multi_suffix;
2063 const char *just_multi_suffix;
2066 bool skip_multi_dir = false;
2067 bool skip_multi_os_dir = false;
2069 multi_suffix = machine_suffix;
2070 just_multi_suffix = just_machine_suffix;
2071 if (do_multi && multilib_dir && strcmp (multilib_dir, ".") != 0)
2073 multi_dir = concat (multilib_dir, dir_separator_str, NULL);
2074 multi_suffix = concat (multi_suffix, multi_dir, NULL);
2075 just_multi_suffix = concat (just_multi_suffix, multi_dir, NULL);
2077 if (do_multi && multilib_os_dir && strcmp (multilib_os_dir, ".") != 0)
2078 multi_os_dir = concat (multilib_os_dir, dir_separator_str, NULL);
2082 size_t multi_dir_len = 0;
2083 size_t multi_os_dir_len = 0;
2085 size_t just_suffix_len;
2089 multi_dir_len = strlen (multi_dir);
2091 multi_os_dir_len = strlen (multi_os_dir);
2092 suffix_len = strlen (multi_suffix);
2093 just_suffix_len = strlen (just_multi_suffix);
2097 len = paths->max_len + extra_space + 1;
2098 if (suffix_len > multi_os_dir_len)
2101 len += multi_os_dir_len;
2102 path = XNEWVEC (char, len);
2105 for (pl = paths->plist; pl != 0; pl = pl->next)
2107 len = strlen (pl->prefix);
2108 memcpy (path, pl->prefix, len);
2110 /* Look first in MACHINE/VERSION subdirectory. */
2111 if (!skip_multi_dir)
2113 memcpy (path + len, multi_suffix, suffix_len + 1);
2114 ret = callback (path, callback_info);
2119 /* Some paths are tried with just the machine (ie. target)
2120 subdir. This is used for finding as, ld, etc. */
2122 && pl->require_machine_suffix == 2)
2124 memcpy (path + len, just_multi_suffix, just_suffix_len + 1);
2125 ret = callback (path, callback_info);
2130 /* Now try the base path. */
2131 if (!pl->require_machine_suffix
2132 && !(pl->os_multilib ? skip_multi_os_dir : skip_multi_dir))
2134 const char *this_multi;
2135 size_t this_multi_len;
2137 if (pl->os_multilib)
2139 this_multi = multi_os_dir;
2140 this_multi_len = multi_os_dir_len;
2144 this_multi = multi_dir;
2145 this_multi_len = multi_dir_len;
2149 memcpy (path + len, this_multi, this_multi_len + 1);
2153 ret = callback (path, callback_info);
2161 if (multi_dir == NULL && multi_os_dir == NULL)
2164 /* Run through the paths again, this time without multilibs.
2165 Don't repeat any we have already seen. */
2168 free (CONST_CAST (char *, multi_dir));
2170 free (CONST_CAST (char *, multi_suffix));
2171 multi_suffix = machine_suffix;
2172 free (CONST_CAST (char *, just_multi_suffix));
2173 just_multi_suffix = just_machine_suffix;
2176 skip_multi_dir = true;
2179 free (CONST_CAST (char *, multi_os_dir));
2180 multi_os_dir = NULL;
2183 skip_multi_os_dir = true;
2188 free (CONST_CAST (char *, multi_dir));
2189 free (CONST_CAST (char *, multi_suffix));
2190 free (CONST_CAST (char *, just_multi_suffix));
2193 free (CONST_CAST (char *, multi_os_dir));
2199 /* Callback for build_search_list. Adds path to obstack being built. */
2201 struct add_to_obstack_info {
2208 add_to_obstack (char *path, void *data)
2210 struct add_to_obstack_info *info = (struct add_to_obstack_info *) data;
2212 if (info->check_dir && !is_directory (path, false))
2215 if (!info->first_time)
2216 obstack_1grow (info->ob, PATH_SEPARATOR);
2218 obstack_grow (info->ob, path, strlen (path));
2220 info->first_time = false;
2224 /* Add or change the value of an environment variable, outputting the
2225 change to standard error if in verbose mode. */
2227 xputenv (const char *string)
2230 fnotice (stderr, "%s\n", string);
2231 putenv (CONST_CAST (char *, string));
2234 /* Build a list of search directories from PATHS.
2235 PREFIX is a string to prepend to the list.
2236 If CHECK_DIR_P is true we ensure the directory exists.
2237 If DO_MULTI is true, multilib paths are output first, then
2239 This is used mostly by putenv_from_prefixes so we use `collect_obstack'.
2240 It is also used by the --print-search-dirs flag. */
2243 build_search_list (const struct path_prefix *paths, const char *prefix,
2244 bool check_dir, bool do_multi)
2246 struct add_to_obstack_info info;
2248 info.ob = &collect_obstack;
2249 info.check_dir = check_dir;
2250 info.first_time = true;
2252 obstack_grow (&collect_obstack, prefix, strlen (prefix));
2253 obstack_1grow (&collect_obstack, '=');
2255 for_each_path (paths, do_multi, 0, add_to_obstack, &info);
2257 obstack_1grow (&collect_obstack, '\0');
2258 return XOBFINISH (&collect_obstack, char *);
2261 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
2265 putenv_from_prefixes (const struct path_prefix *paths, const char *env_var,
2268 xputenv (build_search_list (paths, env_var, true, do_multi));
2271 /* Check whether NAME can be accessed in MODE. This is like access,
2272 except that it never considers directories to be executable. */
2275 access_check (const char *name, int mode)
2281 if (stat (name, &st) < 0
2282 || S_ISDIR (st.st_mode))
2286 return access (name, mode);
2289 /* Callback for find_a_file. Appends the file name to the directory
2290 path. If the resulting file exists in the right mode, return the
2291 full pathname to the file. */
2293 struct file_at_path_info {
2302 file_at_path (char *path, void *data)
2304 struct file_at_path_info *info = (struct file_at_path_info *) data;
2305 size_t len = strlen (path);
2307 memcpy (path + len, info->name, info->name_len);
2308 len += info->name_len;
2310 /* Some systems have a suffix for executable files.
2311 So try appending that first. */
2312 if (info->suffix_len)
2314 memcpy (path + len, info->suffix, info->suffix_len + 1);
2315 if (access_check (path, info->mode) == 0)
2320 if (access_check (path, info->mode) == 0)
2326 /* Search for NAME using the prefix list PREFIXES. MODE is passed to
2327 access to check permissions. If DO_MULTI is true, search multilib
2328 paths then non-multilib paths, otherwise do not search multilib paths.
2329 Return 0 if not found, otherwise return its name, allocated with malloc. */
2332 find_a_file (const struct path_prefix *pprefix, const char *name, int mode,
2335 struct file_at_path_info info;
2337 #ifdef DEFAULT_ASSEMBLER
2338 if (! strcmp (name, "as") && access (DEFAULT_ASSEMBLER, mode) == 0)
2339 return xstrdup (DEFAULT_ASSEMBLER);
2342 #ifdef DEFAULT_LINKER
2343 if (! strcmp(name, "ld") && access (DEFAULT_LINKER, mode) == 0)
2344 return xstrdup (DEFAULT_LINKER);
2347 /* Determine the filename to execute (special case for absolute paths). */
2349 if (IS_ABSOLUTE_PATH (name))
2351 if (access (name, mode) == 0)
2352 return xstrdup (name);
2358 info.suffix = (mode & X_OK) != 0 ? HOST_EXECUTABLE_SUFFIX : "";
2359 info.name_len = strlen (info.name);
2360 info.suffix_len = strlen (info.suffix);
2363 return (char*) for_each_path (pprefix, do_multi,
2364 info.name_len + info.suffix_len,
2365 file_at_path, &info);
2368 /* Ranking of prefixes in the sort list. -B prefixes are put before
2371 enum path_prefix_priority
2373 PREFIX_PRIORITY_B_OPT,
2374 PREFIX_PRIORITY_LAST
2377 /* Add an entry for PREFIX in PLIST. The PLIST is kept in ascending
2378 order according to PRIORITY. Within each PRIORITY, new entries are
2381 If WARN is nonzero, we will warn if no file is found
2382 through this prefix. WARN should point to an int
2383 which will be set to 1 if this entry is used.
2385 COMPONENT is the value to be passed to update_path.
2387 REQUIRE_MACHINE_SUFFIX is 1 if this prefix can't be used without
2388 the complete value of machine_suffix.
2389 2 means try both machine_suffix and just_machine_suffix. */
2392 add_prefix (struct path_prefix *pprefix, const char *prefix,
2393 const char *component, /* enum prefix_priority */ int priority,
2394 int require_machine_suffix, int os_multilib)
2396 struct prefix_list *pl, **prev;
2399 for (prev = &pprefix->plist;
2400 (*prev) != NULL && (*prev)->priority <= priority;
2401 prev = &(*prev)->next)
2404 /* Keep track of the longest prefix. */
2406 prefix = update_path (prefix, component);
2407 len = strlen (prefix);
2408 if (len > pprefix->max_len)
2409 pprefix->max_len = len;
2411 pl = XNEW (struct prefix_list);
2412 pl->prefix = prefix;
2413 pl->require_machine_suffix = require_machine_suffix;
2414 pl->priority = priority;
2415 pl->os_multilib = os_multilib;
2417 /* Insert after PREV. */
2422 /* Same as add_prefix, but prepending target_system_root to prefix. */
2423 /* The target_system_root prefix has been relocated by gcc_exec_prefix. */
2425 add_sysrooted_prefix (struct path_prefix *pprefix, const char *prefix,
2426 const char *component,
2427 /* enum prefix_priority */ int priority,
2428 int require_machine_suffix, int os_multilib)
2430 if (!IS_ABSOLUTE_PATH (prefix))
2431 fatal_error ("system path %qs is not absolute", prefix);
2433 if (target_system_root)
2435 if (target_sysroot_suffix)
2436 prefix = concat (target_sysroot_suffix, prefix, NULL);
2437 prefix = concat (target_system_root, prefix, NULL);
2439 /* We have to override this because GCC's notion of sysroot
2440 moves along with GCC. */
2444 add_prefix (pprefix, prefix, component, priority,
2445 require_machine_suffix, os_multilib);
2448 /* Execute the command specified by the arguments on the current line of spec.
2449 When using pipes, this includes several piped-together commands
2450 with `|' between them.
2452 Return 0 if successful, -1 if failed. */
2458 int n_commands; /* # of command. */
2460 struct pex_obj *pex;
2463 const char *prog; /* program name. */
2464 const char **argv; /* vector of args. */
2467 struct command *commands; /* each command buffer with above info. */
2469 gcc_assert (!processing_spec_function);
2473 string = find_a_file (&exec_prefixes, argbuf[0], X_OK, false);
2474 argbuf[0] = (string) ? string : argbuf[0];
2475 insert_wrapper (wrapper_string);
2478 /* Count # of piped commands. */
2479 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2480 if (strcmp (argbuf[i], "|") == 0)
2483 /* Get storage for each command. */
2484 commands = (struct command *) alloca (n_commands * sizeof (struct command));
2486 /* Split argbuf into its separate piped processes,
2487 and record info about each one.
2488 Also search for the programs that are to be run. */
2490 commands[0].prog = argbuf[0]; /* first command. */
2491 commands[0].argv = &argbuf[0];
2493 if (!wrapper_string)
2495 string = find_a_file (&exec_prefixes, commands[0].prog, X_OK, false);
2496 commands[0].argv[0] = (string) ? string : commands[0].argv[0];
2499 for (n_commands = 1, i = 0; i < argbuf_index; i++)
2500 if (strcmp (argbuf[i], "|") == 0)
2501 { /* each command. */
2502 #if defined (__MSDOS__) || defined (OS2) || defined (VMS)
2503 fatal_error ("-pipe not supported");
2505 argbuf[i] = 0; /* termination of command args. */
2506 commands[n_commands].prog = argbuf[i + 1];
2507 commands[n_commands].argv = &argbuf[i + 1];
2508 string = find_a_file (&exec_prefixes, commands[n_commands].prog,
2511 commands[n_commands].argv[0] = string;
2515 argbuf[argbuf_index] = 0;
2517 /* If -v, print what we are about to do, and maybe query. */
2521 /* For help listings, put a blank line between sub-processes. */
2522 if (print_help_list)
2523 fputc ('\n', stderr);
2525 /* Print each piped command as a separate line. */
2526 for (i = 0; i < n_commands; i++)
2528 const char *const *j;
2530 if (verbose_only_flag)
2532 for (j = commands[i].argv; *j; j++)
2535 for (p = *j; *p; ++p)
2536 if (!ISALNUM ((unsigned char) *p)
2537 && *p != '_' && *p != '/' && *p != '-' && *p != '.')
2541 fprintf (stderr, " \"");
2542 for (p = *j; *p; ++p)
2544 if (*p == '"' || *p == '\\' || *p == '$')
2545 fputc ('\\', stderr);
2548 fputc ('"', stderr);
2551 fprintf (stderr, " %s", *j);
2555 for (j = commands[i].argv; *j; j++)
2556 fprintf (stderr, " %s", *j);
2558 /* Print a pipe symbol after all but the last command. */
2559 if (i + 1 != n_commands)
2560 fprintf (stderr, " |");
2561 fprintf (stderr, "\n");
2564 if (verbose_only_flag != 0)
2566 /* verbose_only_flag should act as if the spec was
2567 executed, so increment execution_count before
2568 returning. This prevents spurious warnings about
2569 unused linker input files, etc. */
2574 fnotice (stderr, "\nGo ahead? (y or n) ");
2578 while (getchar () != '\n')
2581 if (i != 'y' && i != 'Y')
2586 #ifdef ENABLE_VALGRIND_CHECKING
2587 /* Run the each command through valgrind. To simplify prepending the
2588 path to valgrind and the option "-q" (for quiet operation unless
2589 something triggers), we allocate a separate argv array. */
2591 for (i = 0; i < n_commands; i++)
2597 for (argc = 0; commands[i].argv[argc] != NULL; argc++)
2600 argv = XALLOCAVEC (const char *, argc + 3);
2602 argv[0] = VALGRIND_PATH;
2604 for (j = 2; j < argc + 2; j++)
2605 argv[j] = commands[i].argv[j - 2];
2608 commands[i].argv = argv;
2609 commands[i].prog = argv[0];
2613 /* Run each piped subprocess. */
2615 pex = pex_init (PEX_USE_PIPES | ((report_times || report_times_to_file)
2616 ? PEX_RECORD_TIMES : 0),
2617 progname, temp_filename);
2619 fatal_error ("pex_init failed: %m");
2621 for (i = 0; i < n_commands; i++)
2625 const char *string = commands[i].argv[0];
2627 errmsg = pex_run (pex,
2628 ((i + 1 == n_commands ? PEX_LAST : 0)
2629 | (string == commands[i].prog ? PEX_SEARCH : 0)),
2630 string, CONST_CAST (char **, commands[i].argv),
2635 fatal_error (errmsg);
2639 pfatal_with_name (errmsg);
2643 if (string != commands[i].prog)
2644 free (CONST_CAST (char *, string));
2649 /* Wait for all the subprocesses to finish. */
2653 struct pex_time *times = NULL;
2656 statuses = (int *) alloca (n_commands * sizeof (int));
2657 if (!pex_get_status (pex, n_commands, statuses))
2658 fatal_error ("failed to get exit status: %m");
2660 if (report_times || report_times_to_file)
2662 times = (struct pex_time *) alloca (n_commands * sizeof (struct pex_time));
2663 if (!pex_get_times (pex, n_commands, times))
2664 fatal_error ("failed to get process times: %m");
2669 for (i = 0; i < n_commands; ++i)
2671 int status = statuses[i];
2673 if (WIFSIGNALED (status))
2676 /* SIGPIPE is a special case. It happens in -pipe mode
2677 when the compiler dies before the preprocessor is done,
2678 or the assembler dies before the compiler is done.
2679 There's generally been an error already, and this is
2680 just fallout. So don't generate another error unless
2681 we would otherwise have succeeded. */
2682 if (WTERMSIG (status) == SIGPIPE
2683 && (signal_count || greatest_status >= MIN_FATAL_STATUS))
2690 internal_error ("%s (program %s)",
2691 strsignal (WTERMSIG (status)), commands[i].prog);
2693 else if (WIFEXITED (status)
2694 && WEXITSTATUS (status) >= MIN_FATAL_STATUS)
2696 if (WEXITSTATUS (status) > greatest_status)
2697 greatest_status = WEXITSTATUS (status);
2701 if (report_times || report_times_to_file)
2703 struct pex_time *pt = ×[i];
2706 ut = ((double) pt->user_seconds
2707 + (double) pt->user_microseconds / 1.0e6);
2708 st = ((double) pt->system_seconds
2709 + (double) pt->system_microseconds / 1.0e6);
2714 fnotice (stderr, "# %s %.2f %.2f\n",
2715 commands[i].prog, ut, st);
2717 if (report_times_to_file)
2720 const char *const *j;
2722 fprintf (report_times_to_file, "%g %g", ut, st);
2724 for (j = &commands[i].prog; *j; j = &commands[i].argv[++c])
2727 for (p = *j; *p; ++p)
2728 if (*p == '"' || *p == '\\' || *p == '$'
2734 fprintf (report_times_to_file, " \"");
2735 for (p = *j; *p; ++p)
2737 if (*p == '"' || *p == '\\' || *p == '$')
2738 fputc ('\\', report_times_to_file);
2739 fputc (*p, report_times_to_file);
2741 fputc ('"', report_times_to_file);
2744 fprintf (report_times_to_file, " %s", *j);
2747 fputc ('\n', report_times_to_file);
2757 /* Find all the switches given to us
2758 and make a vector describing them.
2759 The elements of the vector are strings, one per switch given.
2760 If a switch uses following arguments, then the `part1' field
2761 is the switch itself and the `args' field
2762 is a null-terminated vector containing the following arguments.
2763 Bits in the `live_cond' field are:
2764 SWITCH_LIVE to indicate this switch is true in a conditional spec.
2765 SWITCH_FALSE to indicate this switch is overridden by a later switch.
2766 SWITCH_IGNORE to indicate this switch should be ignored (used in %<S).
2767 SWITCH_IGNORE_PERMANENTLY to indicate this switch should be ignored
2768 in all do_spec calls afterwards. Used for %<S from self specs.
2769 The `validated' field is nonzero if any spec has looked at this switch;
2770 if it remains zero at the end of the run, it must be meaningless. */
2772 #define SWITCH_LIVE 0x1
2773 #define SWITCH_FALSE 0x2
2774 #define SWITCH_IGNORE 0x4
2775 #define SWITCH_IGNORE_PERMANENTLY 0x8
2781 unsigned int live_cond;
2782 unsigned char validated;
2783 unsigned char ordering;
2786 static struct switchstr *switches;
2788 static int n_switches;
2790 static int n_switches_alloc;
2792 /* Set to zero if -fcompare-debug is disabled, positive if it's
2793 enabled and we're running the first compilation, negative if it's
2794 enabled and we're running the second compilation. For most of the
2795 time, it's in the range -1..1, but it can be temporarily set to 2
2796 or 3 to indicate that the -fcompare-debug flags didn't come from
2797 the command-line, but rather from the GCC_COMPARE_DEBUG environment
2798 variable, until a synthesized -fcompare-debug flag is added to the
2802 /* Set to nonzero if we've seen the -fcompare-debug-second flag. */
2803 int compare_debug_second;
2805 /* Set to the flags that should be passed to the second compilation in
2806 a -fcompare-debug compilation. */
2807 const char *compare_debug_opt;
2809 static struct switchstr *switches_debug_check[2];
2811 static int n_switches_debug_check[2];
2813 static char *debug_check_temp_file[2];
2815 /* Language is one of three things:
2817 1) The name of a real programming language.
2818 2) NULL, indicating that no one has figured out
2820 3) '*', indicating that the file should be passed
2825 const char *language;
2826 struct compiler *incompiler;
2831 /* Also a vector of input files specified. */
2833 static struct infile *infiles;
2837 static int n_infiles_alloc;
2839 /* True if multiple input files are being compiled to a single
2842 static bool combine_inputs;
2844 /* This counts the number of libraries added by lang_specific_driver, so that
2845 we can tell if there were any user supplied any files or libraries. */
2847 static int added_libraries;
2849 /* And a vector of corresponding output files is made up later. */
2851 const char **outfiles;
2853 #if defined(HAVE_TARGET_OBJECT_SUFFIX) || defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2855 /* Convert NAME to a new name if it is the standard suffix. DO_EXE
2856 is true if we should look for an executable suffix. DO_OBJ
2857 is true if we should look for an object suffix. */
2860 convert_filename (const char *name, int do_exe ATTRIBUTE_UNUSED,
2861 int do_obj ATTRIBUTE_UNUSED)
2863 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2871 len = strlen (name);
2873 #ifdef HAVE_TARGET_OBJECT_SUFFIX
2874 /* Convert x.o to x.obj if TARGET_OBJECT_SUFFIX is ".obj". */
2875 if (do_obj && len > 2
2876 && name[len - 2] == '.'
2877 && name[len - 1] == 'o')
2879 obstack_grow (&obstack, name, len - 2);
2880 obstack_grow0 (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
2881 name = XOBFINISH (&obstack, const char *);
2885 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX)
2886 /* If there is no filetype, make it the executable suffix (which includes
2887 the "."). But don't get confused if we have just "-o". */
2888 if (! do_exe || TARGET_EXECUTABLE_SUFFIX[0] == 0 || (len == 2 && name[0] == '-'))
2891 for (i = len - 1; i >= 0; i--)
2892 if (IS_DIR_SEPARATOR (name[i]))
2895 for (i++; i < len; i++)
2899 obstack_grow (&obstack, name, len);
2900 obstack_grow0 (&obstack, TARGET_EXECUTABLE_SUFFIX,
2901 strlen (TARGET_EXECUTABLE_SUFFIX));
2902 name = XOBFINISH (&obstack, const char *);
2909 /* Display the command line switches accepted by gcc. */
2913 printf (_("Usage: %s [options] file...\n"), progname);
2914 fputs (_("Options:\n"), stdout);
2916 fputs (_(" -pass-exit-codes Exit with highest error code from a phase\n"), stdout);
2917 fputs (_(" --help Display this information\n"), stdout);
2918 fputs (_(" --target-help Display target specific command line options\n"), stdout);
2919 fputs (_(" --help={target|optimizers|warnings|params|[^]{joined|separate|undocumented}}[,...]\n"), stdout);
2920 fputs (_(" Display specific types of command line options\n"), stdout);
2922 fputs (_(" (Use '-v --help' to display command line options of sub-processes)\n"), stdout);
2923 fputs (_(" --version Display compiler version information\n"), stdout);
2924 fputs (_(" -dumpspecs Display all of the built in spec strings\n"), stdout);
2925 fputs (_(" -dumpversion Display the version of the compiler\n"), stdout);
2926 fputs (_(" -dumpmachine Display the compiler's target processor\n"), stdout);
2927 fputs (_(" -print-search-dirs Display the directories in the compiler's search path\n"), stdout);
2928 fputs (_(" -print-libgcc-file-name Display the name of the compiler's companion library\n"), stdout);
2929 fputs (_(" -print-file-name=<lib> Display the full path to library <lib>\n"), stdout);
2930 fputs (_(" -print-prog-name=<prog> Display the full path to compiler component <prog>\n"), stdout);
2931 fputs (_(" -print-multi-directory Display the root directory for versions of libgcc\n"), stdout);
2933 -print-multi-lib Display the mapping between command line options and\n\
2934 multiple library search directories\n"), stdout);
2935 fputs (_(" -print-multi-os-directory Display the relative path to OS libraries\n"), stdout);
2936 fputs (_(" -print-sysroot Display the target libraries directory\n"), stdout);
2937 fputs (_(" -print-sysroot-headers-suffix Display the sysroot suffix used to find headers\n"), stdout);
2938 fputs (_(" -Wa,<options> Pass comma-separated <options> on to the assembler\n"), stdout);
2939 fputs (_(" -Wp,<options> Pass comma-separated <options> on to the preprocessor\n"), stdout);
2940 fputs (_(" -Wl,<options> Pass comma-separated <options> on to the linker\n"), stdout);
2941 fputs (_(" -Xassembler <arg> Pass <arg> on to the assembler\n"), stdout);
2942 fputs (_(" -Xpreprocessor <arg> Pass <arg> on to the preprocessor\n"), stdout);
2943 fputs (_(" -Xlinker <arg> Pass <arg> on to the linker\n"), stdout);
2944 fputs (_(" -save-temps Do not delete intermediate files\n"), stdout);
2945 fputs (_(" -save-temps=<arg> Do not delete intermediate files\n"), stdout);
2947 -no-canonical-prefixes Do not canonicalize paths when building relative\n\
2948 prefixes to other gcc components\n"), stdout);
2949 fputs (_(" -pipe Use pipes rather than intermediate files\n"), stdout);
2950 fputs (_(" -time Time the execution of each subprocess\n"), stdout);
2951 fputs (_(" -specs=<file> Override built-in specs with the contents of <file>\n"), stdout);
2952 fputs (_(" -std=<standard> Assume that the input sources are for <standard>\n"), stdout);
2954 --sysroot=<directory> Use <directory> as the root directory for headers\n\
2955 and libraries\n"), stdout);
2956 fputs (_(" -B <directory> Add <directory> to the compiler's search paths\n"), stdout);
2957 fputs (_(" -v Display the programs invoked by the compiler\n"), stdout);
2958 fputs (_(" -### Like -v but options quoted and commands not executed\n"), stdout);
2959 fputs (_(" -E Preprocess only; do not compile, assemble or link\n"), stdout);
2960 fputs (_(" -S Compile only; do not assemble or link\n"), stdout);
2961 fputs (_(" -c Compile and assemble, but do not link\n"), stdout);
2962 fputs (_(" -o <file> Place the output into <file>\n"), stdout);
2964 -x <language> Specify the language of the following input files\n\
2965 Permissible languages include: c c++ assembler none\n\
2966 'none' means revert to the default behavior of\n\
2967 guessing the language based on the file's extension\n\
2971 \nOptions starting with -g, -f, -m, -O, -W, or --param are automatically\n\
2972 passed on to the various sub-processes invoked by %s. In order to pass\n\
2973 other options on to these processes the -W<letter> options must be used.\n\
2976 /* The rest of the options are displayed by invocations of the various
2981 add_preprocessor_option (const char *option, int len)
2983 n_preprocessor_options++;
2985 if (! preprocessor_options)
2986 preprocessor_options = XNEWVEC (char *, n_preprocessor_options);
2988 preprocessor_options = XRESIZEVEC (char *, preprocessor_options,
2989 n_preprocessor_options);
2991 preprocessor_options [n_preprocessor_options - 1] =
2992 save_string (option, len);
2996 add_assembler_option (const char *option, int len)
2998 n_assembler_options++;
3000 if (! assembler_options)
3001 assembler_options = XNEWVEC (char *, n_assembler_options);
3003 assembler_options = XRESIZEVEC (char *, assembler_options,
3004 n_assembler_options);
3006 assembler_options [n_assembler_options - 1] = save_string (option, len);
3010 add_linker_option (const char *option, int len)
3014 if (! linker_options)
3015 linker_options = XNEWVEC (char *, n_linker_options);
3017 linker_options = XRESIZEVEC (char *, linker_options, n_linker_options);
3019 linker_options [n_linker_options - 1] = save_string (option, len);
3022 /* Allocate space for an input file in infiles. */
3027 if (n_infiles_alloc == 0)
3029 n_infiles_alloc = 16;
3030 infiles = XNEWVEC (struct infile, n_infiles_alloc);
3032 else if (n_infiles_alloc == n_infiles)
3034 n_infiles_alloc *= 2;
3035 infiles = XRESIZEVEC (struct infile, infiles, n_infiles_alloc);
3039 /* Store an input file with the given NAME and LANGUAGE in
3043 add_infile (const char *name, const char *language)
3046 infiles[n_infiles].name = name;
3047 infiles[n_infiles++].language = language;
3050 /* Allocate space for a switch in switches. */
3055 if (n_switches_alloc == 0)
3057 n_switches_alloc = 16;
3058 switches = XNEWVEC (struct switchstr, n_switches_alloc);
3060 else if (n_switches_alloc == n_switches)
3062 n_switches_alloc *= 2;
3063 switches = XRESIZEVEC (struct switchstr, switches, n_switches_alloc);
3067 /* Save an option OPT with N_ARGS arguments in array ARGS, marking it
3068 as validated if VALIDATED. */
3071 save_switch (const char *opt, size_t n_args, const char *const *args,
3075 switches[n_switches].part1 = opt + 1;
3077 switches[n_switches].args = 0;
3080 switches[n_switches].args = XNEWVEC (const char *, n_args + 1);
3081 memcpy (switches[n_switches].args, args, n_args * sizeof (const char *));
3082 switches[n_switches].args[n_args] = NULL;
3085 switches[n_switches].live_cond = 0;
3086 switches[n_switches].validated = validated;
3087 switches[n_switches].ordering = 0;
3091 /* Handle an option DECODED that is unknown to the option-processing
3092 machinery, but may be known to specs. */
3095 driver_unknown_option_callback (const struct cl_decoded_option *decoded)
3097 save_switch (decoded->canonical_option[0],
3098 decoded->canonical_option_num_elements - 1,
3099 &decoded->canonical_option[1], false);
3104 /* Handle an option DECODED that is not marked as CL_DRIVER.
3105 LANG_MASK will always be CL_DRIVER. */
3108 driver_wrong_lang_callback (const struct cl_decoded_option *decoded,
3109 unsigned int lang_mask ATTRIBUTE_UNUSED)
3111 /* At this point, non-driver options are accepted (and expected to
3112 be passed down by specs) unless marked to be rejected by the
3113 driver. Options to be rejected by the driver but accepted by the
3114 compilers proper are treated just like completely unknown
3116 const struct cl_option *option = &cl_options[decoded->opt_index];
3118 if (option->flags & CL_REJECT_DRIVER)
3119 error ("unrecognized command line option %qs",
3120 decoded->orig_option_with_args_text);
3122 driver_unknown_option_callback (decoded);
3125 /* Note that an option (index OPT_INDEX, argument ARG, value VALUE)
3126 has been successfully handled with a handler for mask MASK. */
3129 driver_post_handling_callback (const struct cl_decoded_option *decoded ATTRIBUTE_UNUSED,
3130 unsigned int mask ATTRIBUTE_UNUSED)
3132 /* Nothing to do here. */
3135 static const char *spec_lang = 0;
3136 static int last_language_n_infiles;
3138 /* Handle a driver option; arguments and return value as for
3142 driver_handle_option (struct gcc_options *opts,
3143 struct gcc_options *opts_set,
3144 const struct cl_decoded_option *decoded,
3145 unsigned int lang_mask ATTRIBUTE_UNUSED, int kind,
3146 const struct cl_option_handlers *handlers ATTRIBUTE_UNUSED)
3148 size_t opt_index = decoded->opt_index;
3149 const char *arg = decoded->arg;
3150 const char *compare_debug_replacement_opt;
3151 int value = decoded->value;
3152 bool validated = false;
3153 bool do_save = true;
3155 gcc_assert (opts == &global_options);
3156 gcc_assert (opts_set == &global_options_set);
3157 gcc_assert (kind == DK_UNSPECIFIED);
3163 struct spec_list *sl;
3165 for (sl = specs; sl; sl = sl->next)
3166 printf ("*%s:\n%s\n\n", sl->name, *(sl->ptr_spec));
3167 if (link_command_spec)
3168 printf ("*link_command:\n%s\n\n", link_command_spec);
3172 case OPT_dumpversion:
3173 printf ("%s\n", spec_version);
3176 case OPT_dumpmachine:
3177 printf ("%s\n", spec_machine);
3183 /* CPP driver cannot obtain switch from cc1_options. */
3185 add_preprocessor_option ("--version", strlen ("--version"));
3186 add_assembler_option ("--version", strlen ("--version"));
3187 add_linker_option ("--version", strlen ("--version"));
3191 print_help_list = 1;
3193 /* CPP driver cannot obtain switch from cc1_options. */
3195 add_preprocessor_option ("--help", 6);
3196 add_assembler_option ("--help", 6);
3197 add_linker_option ("--help", 6);
3201 print_subprocess_help = 2;
3204 case OPT__target_help:
3205 print_subprocess_help = 1;
3207 /* CPP driver cannot obtain switch from cc1_options. */
3209 add_preprocessor_option ("--target-help", 13);
3210 add_assembler_option ("--target-help", 13);
3211 add_linker_option ("--target-help", 13);
3214 case OPT_pass_exit_codes:
3215 case OPT_print_search_dirs:
3216 case OPT_print_file_name_:
3217 case OPT_print_prog_name_:
3218 case OPT_print_multi_lib:
3219 case OPT_print_multi_directory:
3220 case OPT_print_sysroot:
3221 case OPT_print_multi_os_directory:
3222 case OPT_print_sysroot_headers_suffix:
3225 /* These options set the variables specified in common.opt
3226 automatically, and do not need to be saved for spec
3231 case OPT_print_libgcc_file_name:
3232 print_file_name = "libgcc.a";
3236 case OPT_fcompare_debug_second:
3237 compare_debug_second = 1;
3240 case OPT_fcompare_debug:
3244 compare_debug_replacement_opt = "-fcompare-debug=";
3246 goto compare_debug_with_arg;
3249 compare_debug_replacement_opt = "-fcompare-debug=-gtoggle";
3251 goto compare_debug_with_arg;
3258 case OPT_fcompare_debug_:
3259 compare_debug_replacement_opt = decoded->canonical_option[0];
3260 compare_debug_with_arg:
3261 gcc_assert (decoded->canonical_option_num_elements == 1);
3262 gcc_assert (arg != NULL);
3267 if (compare_debug < 0)
3268 compare_debug_opt = NULL;
3270 compare_debug_opt = arg;
3271 save_switch (compare_debug_replacement_opt, 0, NULL, validated);
3277 /* Pass the rest of this option to the assembler. */
3279 /* Split the argument at commas. */
3281 for (j = 0; arg[j]; j++)
3284 add_assembler_option (arg + prev, j - prev);
3288 /* Record the part after the last comma. */
3289 add_assembler_option (arg + prev, j - prev);
3297 /* Pass the rest of this option to the preprocessor. */
3299 /* Split the argument at commas. */
3301 for (j = 0; arg[j]; j++)
3304 add_preprocessor_option (arg + prev, j - prev);
3308 /* Record the part after the last comma. */
3309 add_preprocessor_option (arg + prev, j - prev);
3317 /* Split the argument at commas. */
3319 for (j = 0; arg[j]; j++)
3322 add_infile (save_string (arg + prev, j - prev), "*");
3325 /* Record the part after the last comma. */
3326 add_infile (arg + prev, "*");
3332 add_infile (arg, "*");
3336 case OPT_Xpreprocessor:
3337 add_preprocessor_option (arg, strlen (arg));
3341 case OPT_Xassembler:
3342 add_assembler_option (arg, strlen (arg));
3347 /* POSIX allows separation of -l and the lib arg; canonicalize
3348 by concatenating -l with its arg */
3349 add_infile (concat ("-l", arg, NULL), "*");
3354 /* Similarly, canonicalize -L for linkers that may not accept
3355 separate arguments. */
3356 save_switch (concat ("-L", arg, NULL), 0, NULL, validated);
3359 case OPT_save_temps:
3360 save_temps_flag = SAVE_TEMPS_CWD;
3364 case OPT_save_temps_:
3365 if (strcmp (arg, "cwd") == 0)
3366 save_temps_flag = SAVE_TEMPS_CWD;
3367 else if (strcmp (arg, "obj") == 0
3368 || strcmp (arg, "object") == 0)
3369 save_temps_flag = SAVE_TEMPS_OBJ;
3371 fatal_error ("%qs is an unknown -save-temps option",
3372 decoded->orig_option_with_args_text);
3375 case OPT_no_canonical_prefixes:
3376 /* Already handled as a special case, so ignored here. */
3382 /* These options set the variables specified in common.opt
3383 automatically, but do need to be saved for spec
3389 struct user_specs *user = XNEW (struct user_specs);
3391 user->next = (struct user_specs *) 0;
3392 user->filename = arg;
3393 if (user_specs_tail)
3394 user_specs_tail->next = user;
3396 user_specs_head = user;
3397 user_specs_tail = user;
3403 target_system_root = arg;
3404 target_system_root_changed = 1;
3409 if (report_times_to_file)
3410 fclose (report_times_to_file);
3411 report_times_to_file = fopen (arg, "a");
3417 This is similar to -v except that there is no execution
3418 of the commands and the echoed arguments are quoted. It
3419 is intended for use in shell scripts to capture the
3420 driver-generated command line. */
3421 verbose_only_flag++;
3428 size_t len = strlen (arg);
3430 /* Catch the case where the user has forgotten to append a
3431 directory separator to the path. Note, they may be using
3432 -B to add an executable name prefix, eg "i386-elf-", in
3433 order to distinguish between multiple installations of
3434 GCC in the same directory. Hence we must check to see
3435 if appending a directory separator actually makes a
3436 valid directory name. */
3437 if (!IS_DIR_SEPARATOR (arg[len - 1])
3438 && is_directory (arg, false))
3440 char *tmp = XNEWVEC (char, len + 2);
3442 tmp[len] = DIR_SEPARATOR;
3447 add_prefix (&exec_prefixes, arg, NULL,
3448 PREFIX_PRIORITY_B_OPT, 0, 0);
3449 add_prefix (&startfile_prefixes, arg, NULL,
3450 PREFIX_PRIORITY_B_OPT, 0, 0);
3451 add_prefix (&include_prefixes, arg, NULL,
3452 PREFIX_PRIORITY_B_OPT, 0, 0);
3457 case OPT_v: /* Print our subcommands and print versions. */
3463 if (!strcmp (spec_lang, "none"))
3464 /* Suppress the warning if -xnone comes after the last input
3465 file, because alternate command interfaces like g++ might
3466 find it useful to place -xnone after each input file. */
3469 last_language_n_infiles = n_infiles;
3475 #if defined(HAVE_TARGET_EXECUTABLE_SUFFIX) || defined(HAVE_TARGET_OBJECT_SUFFIX)
3476 arg = convert_filename (arg, ! have_c, 0);
3478 /* Save the output name in case -save-temps=obj was used. */
3479 save_temps_prefix = xstrdup (arg);
3480 /* On some systems, ld cannot handle "-o" without a space. So
3481 split the option from its argument. */
3482 save_switch ("-o", 1, &arg, validated);
3485 case OPT_static_libgcc:
3486 case OPT_shared_libgcc:
3487 case OPT_static_libgfortran:
3488 case OPT_static_libstdc__:
3489 /* These are always valid, since gcc.c itself understands the
3490 first two, gfortranspec.c understands -static-libgfortran and
3491 g++spec.c understands -static-libstdc++ */
3496 /* Various driver options need no special processing at this
3497 point, having been handled in a prescan above or being
3498 handled by specs. */
3503 save_switch (decoded->canonical_option[0],
3504 decoded->canonical_option_num_elements - 1,
3505 &decoded->canonical_option[1], validated);
3509 /* Create the vector `switches' and its contents.
3510 Store its length in `n_switches'. */
3513 process_command (unsigned int decoded_options_count,
3514 struct cl_decoded_option *decoded_options)
3518 const char *tooldir_prefix;
3519 char *(*get_relative_prefix) (const char *, const char *,
3520 const char *) = NULL;
3521 struct cl_option_handlers handlers;
3524 GET_ENVIRONMENT (gcc_exec_prefix, "GCC_EXEC_PREFIX");
3528 added_libraries = 0;
3530 /* Figure compiler version from version string. */
3532 compiler_version = temp1 = xstrdup (version_string);
3534 for (; *temp1; ++temp1)
3543 /* Handle any -no-canonical-prefixes flag early, to assign the function
3544 that builds relative prefixes. This function creates default search
3545 paths that are needed later in normal option handling. */
3547 for (j = 1; j < decoded_options_count; j++)
3549 if (decoded_options[j].opt_index == OPT_no_canonical_prefixes)
3551 get_relative_prefix = make_relative_prefix_ignore_links;
3555 if (! get_relative_prefix)
3556 get_relative_prefix = make_relative_prefix;
3558 /* Set up the default search paths. If there is no GCC_EXEC_PREFIX,
3559 see if we can create it from the pathname specified in
3560 decoded_options[0].arg. */
3562 gcc_libexec_prefix = standard_libexec_prefix;
3564 /* FIXME: make_relative_prefix doesn't yet work for VMS. */
3565 if (!gcc_exec_prefix)
3567 gcc_exec_prefix = get_relative_prefix (decoded_options[0].arg,
3568 standard_bindir_prefix,
3569 standard_exec_prefix);
3570 gcc_libexec_prefix = get_relative_prefix (decoded_options[0].arg,
3571 standard_bindir_prefix,
3572 standard_libexec_prefix);
3573 if (gcc_exec_prefix)
3574 xputenv (concat ("GCC_EXEC_PREFIX=", gcc_exec_prefix, NULL));
3578 /* make_relative_prefix requires a program name, but
3579 GCC_EXEC_PREFIX is typically a directory name with a trailing
3580 / (which is ignored by make_relative_prefix), so append a
3582 char *tmp_prefix = concat (gcc_exec_prefix, "gcc", NULL);
3583 gcc_libexec_prefix = get_relative_prefix (tmp_prefix,
3584 standard_exec_prefix,
3585 standard_libexec_prefix);
3587 /* The path is unrelocated, so fallback to the original setting. */
3588 if (!gcc_libexec_prefix)
3589 gcc_libexec_prefix = standard_libexec_prefix;
3595 /* From this point onward, gcc_exec_prefix is non-null if the toolchain
3596 is relocated. The toolchain was either relocated using GCC_EXEC_PREFIX
3597 or an automatically created GCC_EXEC_PREFIX from
3598 decoded_options[0].arg. */
3600 /* Do language-specific adjustment/addition of flags. */
3601 lang_specific_driver (&decoded_options, &decoded_options_count,
3604 if (gcc_exec_prefix)
3606 int len = strlen (gcc_exec_prefix);
3608 if (len > (int) sizeof ("/lib/gcc/") - 1
3609 && (IS_DIR_SEPARATOR (gcc_exec_prefix[len-1])))
3611 temp = gcc_exec_prefix + len - sizeof ("/lib/gcc/") + 1;
3612 if (IS_DIR_SEPARATOR (*temp)
3613 && strncmp (temp + 1, "lib", 3) == 0
3614 && IS_DIR_SEPARATOR (temp[4])
3615 && strncmp (temp + 5, "gcc", 3) == 0)
3616 len -= sizeof ("/lib/gcc/") - 1;
3619 set_std_prefix (gcc_exec_prefix, len);
3620 add_prefix (&exec_prefixes, gcc_libexec_prefix, "GCC",
3621 PREFIX_PRIORITY_LAST, 0, 0);
3622 add_prefix (&startfile_prefixes, gcc_exec_prefix, "GCC",
3623 PREFIX_PRIORITY_LAST, 0, 0);
3626 /* COMPILER_PATH and LIBRARY_PATH have values
3627 that are lists of directory names with colons. */
3629 GET_ENVIRONMENT (temp, "COMPILER_PATH");
3632 const char *startp, *endp;
3633 char *nstore = (char *) alloca (strlen (temp) + 3);
3635 startp = endp = temp;
3638 if (*endp == PATH_SEPARATOR || *endp == 0)
3640 strncpy (nstore, startp, endp - startp);
3642 strcpy (nstore, concat (".", dir_separator_str, NULL));
3643 else if (!IS_DIR_SEPARATOR (endp[-1]))
3645 nstore[endp - startp] = DIR_SEPARATOR;
3646 nstore[endp - startp + 1] = 0;
3649 nstore[endp - startp] = 0;
3650 add_prefix (&exec_prefixes, nstore, 0,
3651 PREFIX_PRIORITY_LAST, 0, 0);
3652 add_prefix (&include_prefixes, nstore, 0,
3653 PREFIX_PRIORITY_LAST, 0, 0);
3656 endp = startp = endp + 1;
3663 GET_ENVIRONMENT (temp, LIBRARY_PATH_ENV);
3664 if (temp && *cross_compile == '0')
3666 const char *startp, *endp;
3667 char *nstore = (char *) alloca (strlen (temp) + 3);
3669 startp = endp = temp;
3672 if (*endp == PATH_SEPARATOR || *endp == 0)
3674 strncpy (nstore, startp, endp - startp);
3676 strcpy (nstore, concat (".", dir_separator_str, NULL));
3677 else if (!IS_DIR_SEPARATOR (endp[-1]))
3679 nstore[endp - startp] = DIR_SEPARATOR;
3680 nstore[endp - startp + 1] = 0;
3683 nstore[endp - startp] = 0;
3684 add_prefix (&startfile_prefixes, nstore, NULL,
3685 PREFIX_PRIORITY_LAST, 0, 1);
3688 endp = startp = endp + 1;
3695 /* Use LPATH like LIBRARY_PATH (for the CMU build program). */
3696 GET_ENVIRONMENT (temp, "LPATH");
3697 if (temp && *cross_compile == '0')
3699 const char *startp, *endp;
3700 char *nstore = (char *) alloca (strlen (temp) + 3);
3702 startp = endp = temp;
3705 if (*endp == PATH_SEPARATOR || *endp == 0)
3707 strncpy (nstore, startp, endp - startp);
3709 strcpy (nstore, concat (".", dir_separator_str, NULL));
3710 else if (!IS_DIR_SEPARATOR (endp[-1]))
3712 nstore[endp - startp] = DIR_SEPARATOR;
3713 nstore[endp - startp + 1] = 0;
3716 nstore[endp - startp] = 0;
3717 add_prefix (&startfile_prefixes, nstore, NULL,
3718 PREFIX_PRIORITY_LAST, 0, 1);
3721 endp = startp = endp + 1;
3728 /* Process the options and store input files and switches in their
3731 last_language_n_infiles = -1;
3733 handlers.unknown_option_callback = driver_unknown_option_callback;
3734 handlers.wrong_lang_callback = driver_wrong_lang_callback;
3735 handlers.post_handling_callback = driver_post_handling_callback;
3736 handlers.num_handlers = 1;
3737 handlers.handlers[0].handler = driver_handle_option;
3738 handlers.handlers[0].mask = CL_DRIVER;
3740 for (j = 1; j < decoded_options_count; j++)
3742 switch (decoded_options[j].opt_index)
3754 for (j = 1; j < decoded_options_count; j++)
3756 if (decoded_options[j].opt_index == OPT_SPECIAL_input_file)
3758 const char *arg = decoded_options[j].arg;
3759 const char *p = strrchr (arg, '@');
3763 #ifdef HAVE_TARGET_OBJECT_SUFFIX
3764 arg = convert_filename (arg, 0, access (arg, F_OK));
3766 /* For LTO static archive support we handle input file
3767 specifications that are composed of a filename and
3768 an offset like FNAME@OFFSET. */
3771 && sscanf (p, "@%li%n", &offset, &consumed) >= 1
3772 && strlen (p) == (unsigned int)consumed)
3774 fname = (char *)xmalloc (p - arg + 1);
3775 memcpy (fname, arg, p - arg);
3776 fname[p - arg] = '\0';
3777 /* Only accept non-stdin and existing FNAME parts, otherwise
3778 try with the full name. */
3779 if (strcmp (fname, "-") == 0 || access (fname, F_OK) < 0)
3782 fname = xstrdup (arg);
3786 fname = xstrdup (arg);
3788 if (strcmp (fname, "-") != 0 && access (fname, F_OK) < 0)
3789 perror_with_name (fname);
3791 add_infile (arg, spec_lang);
3797 read_cmdline_option (&global_options, &global_options_set,
3798 decoded_options + j, CL_DRIVER, &handlers,
3802 /* If -save-temps=obj and -o name, create the prefix to use for %b.
3803 Otherwise just make -save-temps=obj the same as -save-temps=cwd. */
3804 if (save_temps_flag == SAVE_TEMPS_OBJ && save_temps_prefix != NULL)
3806 save_temps_length = strlen (save_temps_prefix);
3807 temp = strrchr (lbasename (save_temps_prefix), '.');
3810 save_temps_length -= strlen (temp);
3811 save_temps_prefix[save_temps_length] = '\0';
3815 else if (save_temps_prefix != NULL)
3817 free (save_temps_prefix);
3818 save_temps_prefix = NULL;
3821 if (save_temps_flag && use_pipes)
3823 /* -save-temps overrides -pipe, so that temp files are produced */
3824 if (save_temps_flag)
3825 warning (0, "-pipe ignored because -save-temps specified");
3831 const char *gcd = getenv ("GCC_COMPARE_DEBUG");
3833 if (gcd && gcd[0] == '-')
3836 compare_debug_opt = gcd;
3838 else if (gcd && *gcd && strcmp (gcd, "0"))
3841 compare_debug_opt = "-gtoggle";
3844 else if (compare_debug < 0)
3847 gcc_assert (!compare_debug_opt);
3850 /* Set up the search paths. We add directories that we expect to
3851 contain GNU Toolchain components before directories specified by
3852 the machine description so that we will find GNU components (like
3853 the GNU assembler) before those of the host system. */
3855 /* If we don't know where the toolchain has been installed, use the
3856 configured-in locations. */
3857 if (!gcc_exec_prefix)
3860 add_prefix (&exec_prefixes, standard_libexec_prefix, "GCC",
3861 PREFIX_PRIORITY_LAST, 1, 0);
3862 add_prefix (&exec_prefixes, standard_libexec_prefix, "BINUTILS",
3863 PREFIX_PRIORITY_LAST, 2, 0);
3864 add_prefix (&exec_prefixes, standard_exec_prefix, "BINUTILS",
3865 PREFIX_PRIORITY_LAST, 2, 0);
3867 add_prefix (&startfile_prefixes, standard_exec_prefix, "BINUTILS",
3868 PREFIX_PRIORITY_LAST, 1, 0);
3871 gcc_assert (!IS_ABSOLUTE_PATH (tooldir_base_prefix));
3872 tooldir_prefix = concat (tooldir_base_prefix, spec_machine,
3873 dir_separator_str, NULL);
3875 /* Look for tools relative to the location from which the driver is
3876 running, or, if that is not available, the configured prefix. */
3878 = concat (gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
3879 spec_machine, dir_separator_str,
3880 spec_version, dir_separator_str, tooldir_prefix, NULL);
3882 add_prefix (&exec_prefixes,
3883 concat (tooldir_prefix, "bin", dir_separator_str, NULL),
3884 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 0);
3885 add_prefix (&startfile_prefixes,
3886 concat (tooldir_prefix, "lib", dir_separator_str, NULL),
3887 "BINUTILS", PREFIX_PRIORITY_LAST, 0, 1);
3889 #if defined(TARGET_SYSTEM_ROOT_RELOCATABLE) && !defined(VMS)
3890 /* If the normal TARGET_SYSTEM_ROOT is inside of $exec_prefix,
3891 then consider it to relocate with the rest of the GCC installation
3892 if GCC_EXEC_PREFIX is set.
3893 ``make_relative_prefix'' is not compiled for VMS, so don't call it. */
3894 if (target_system_root && !target_system_root_changed && gcc_exec_prefix)
3896 char *tmp_prefix = get_relative_prefix (decoded_options[0].arg,
3897 standard_bindir_prefix,
3898 target_system_root);
3899 if (tmp_prefix && access_check (tmp_prefix, F_OK) == 0)
3901 target_system_root = tmp_prefix;
3902 target_system_root_changed = 1;
3907 /* More prefixes are enabled in main, after we read the specs file
3908 and determine whether this is cross-compilation or not. */
3910 if (n_infiles == last_language_n_infiles && spec_lang != 0)
3911 warning (0, "%<-x %s%> after last input file has no effect", spec_lang);
3913 if (compare_debug == 2 || compare_debug == 3)
3916 switches[n_switches].part1 = concat ("fcompare-debug=",
3919 switches[n_switches].args = 0;
3920 switches[n_switches].live_cond = 0;
3921 switches[n_switches].validated = 0;
3922 switches[n_switches].ordering = 0;
3927 /* Ensure we only invoke each subprocess once. */
3928 if (print_subprocess_help || print_help_list || print_version)
3932 /* Create a dummy input file, so that we can pass
3933 the help option on to the various sub-processes. */
3934 add_infile ("help-dummy", "c");
3938 switches[n_switches].part1 = 0;
3940 infiles[n_infiles].name = 0;
3943 /* Store switches not filtered out by %<S in spec in COLLECT_GCC_OPTIONS
3944 and place that in the environment. */
3947 set_collect_gcc_options (void)
3952 /* Build COLLECT_GCC_OPTIONS to have all of the options specified to
3954 obstack_grow (&collect_obstack, "COLLECT_GCC_OPTIONS=",
3955 sizeof ("COLLECT_GCC_OPTIONS=") - 1);
3958 for (i = 0; (int) i < n_switches; i++)
3960 const char *const *args;
3963 obstack_grow (&collect_obstack, " ", 1);
3967 /* Ignore elided switches. */
3968 if ((switches[i].live_cond & SWITCH_IGNORE) != 0)
3971 obstack_grow (&collect_obstack, "'-", 2);
3972 q = switches[i].part1;
3973 while ((p = strchr (q, '\'')))
3975 obstack_grow (&collect_obstack, q, p - q);
3976 obstack_grow (&collect_obstack, "'\\''", 4);
3979 obstack_grow (&collect_obstack, q, strlen (q));
3980 obstack_grow (&collect_obstack, "'", 1);
3982 for (args = switches[i].args; args && *args; args++)
3984 obstack_grow (&collect_obstack, " '", 2);
3986 while ((p = strchr (q, '\'')))
3988 obstack_grow (&collect_obstack, q, p - q);
3989 obstack_grow (&collect_obstack, "'\\''", 4);
3992 obstack_grow (&collect_obstack, q, strlen (q));
3993 obstack_grow (&collect_obstack, "'", 1);
3996 obstack_grow (&collect_obstack, "\0", 1);
3997 xputenv (XOBFINISH (&collect_obstack, char *));
4000 /* Process a spec string, accumulating and running commands. */
4002 /* These variables describe the input file name.
4003 input_file_number is the index on outfiles of this file,
4004 so that the output file name can be stored for later use by %o.
4005 input_basename is the start of the part of the input file
4006 sans all directory names, and basename_length is the number
4007 of characters starting there excluding the suffix .c or whatever. */
4009 static const char *gcc_input_filename;
4010 static int input_file_number;
4011 size_t input_filename_length;
4012 static int basename_length;
4013 static int suffixed_basename_length;
4014 static const char *input_basename;
4015 static const char *input_suffix;
4016 #ifndef HOST_LACKS_INODE_NUMBERS
4017 static struct stat input_stat;
4019 static int input_stat_set;
4021 /* The compiler used to process the current input file. */
4022 static struct compiler *input_file_compiler;
4024 /* These are variables used within do_spec and do_spec_1. */
4026 /* Nonzero if an arg has been started and not yet terminated
4027 (with space, tab or newline). */
4028 static int arg_going;
4030 /* Nonzero means %d or %g has been seen; the next arg to be terminated
4031 is a temporary file name. */
4032 static int delete_this_arg;
4034 /* Nonzero means %w has been seen; the next arg to be terminated
4035 is the output file name of this compilation. */
4036 static int this_is_output_file;
4038 /* Nonzero means %s has been seen; the next arg to be terminated
4039 is the name of a library file and we should try the standard
4040 search dirs for it. */
4041 static int this_is_library_file;
4043 /* Nonzero means %T has been seen; the next arg to be terminated
4044 is the name of a linker script and we should try all of the
4045 standard search dirs for it. If it is found insert a --script
4046 command line switch and then substitute the full path in place,
4047 otherwise generate an error message. */
4048 static int this_is_linker_script;
4050 /* Nonzero means that the input of this command is coming from a pipe. */
4051 static int input_from_pipe;
4053 /* Nonnull means substitute this for any suffix when outputting a switches
4055 static const char *suffix_subst;
4057 /* If there is an argument being accumulated, terminate it and store it. */
4060 end_going_arg (void)
4066 obstack_1grow (&obstack, 0);
4067 string = XOBFINISH (&obstack, const char *);
4068 if (this_is_library_file)
4069 string = find_file (string);
4070 if (this_is_linker_script)
4072 char * full_script_path = find_a_file (&startfile_prefixes, string, R_OK, true);
4074 if (full_script_path == NULL)
4076 error ("unable to locate default linker script %qs in the library search paths", string);
4077 /* Script was not found on search path. */
4080 store_arg ("--script", false, false);
4081 string = full_script_path;
4083 store_arg (string, delete_this_arg, this_is_output_file);
4084 if (this_is_output_file)
4085 outfiles[input_file_number] = string;
4091 /* Parse the WRAPPER string which is a comma separated list of the command line
4092 and insert them into the beginning of argbuf. */
4095 insert_wrapper (const char *wrapper)
4099 char *buf = xstrdup (wrapper);
4108 while ((p = strchr (p, ',')) != NULL);
4110 if (argbuf_index + n >= argbuf_length)
4112 argbuf_length = argbuf_length * 2;
4113 while (argbuf_length < argbuf_index + n)
4115 argbuf = XRESIZEVEC (const char *, argbuf, argbuf_length);
4117 for (i = argbuf_index - 1; i >= 0; i--)
4118 argbuf[i + n] = argbuf[i];
4131 while ((p = strchr (p, ',')) != NULL);
4132 gcc_assert (i == n);
4136 /* Process the spec SPEC and run the commands specified therein.
4137 Returns 0 if the spec is successfully processed; -1 if failed. */
4140 do_spec (const char *spec)
4144 value = do_spec_2 (spec);
4146 /* Force out any unfinished command.
4147 If -pipe, this forces out the last command if it ended in `|'. */
4150 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4153 set_collect_gcc_options ();
4155 if (argbuf_index > 0)
4163 do_spec_2 (const char *spec)
4169 delete_this_arg = 0;
4170 this_is_output_file = 0;
4171 this_is_library_file = 0;
4172 this_is_linker_script = 0;
4173 input_from_pipe = 0;
4174 suffix_subst = NULL;
4176 result = do_spec_1 (spec, 0, NULL);
4184 /* Process the given spec string and add any new options to the end
4185 of the switches/n_switches array. */
4188 do_option_spec (const char *name, const char *spec)
4190 unsigned int i, value_count, value_len;
4191 const char *p, *q, *value;
4192 char *tmp_spec, *tmp_spec_p;
4194 if (configure_default_options[0].name == NULL)
4197 for (i = 0; i < ARRAY_SIZE (configure_default_options); i++)
4198 if (strcmp (configure_default_options[i].name, name) == 0)
4200 if (i == ARRAY_SIZE (configure_default_options))
4203 value = configure_default_options[i].value;
4204 value_len = strlen (value);
4206 /* Compute the size of the final spec. */
4209 while ((p = strstr (p, "%(VALUE)")) != NULL)
4215 /* Replace each %(VALUE) by the specified value. */
4216 tmp_spec = (char *) alloca (strlen (spec) + 1
4217 + value_count * (value_len - strlen ("%(VALUE)")));
4218 tmp_spec_p = tmp_spec;
4220 while ((p = strstr (q, "%(VALUE)")) != NULL)
4222 memcpy (tmp_spec_p, q, p - q);
4223 tmp_spec_p = tmp_spec_p + (p - q);
4224 memcpy (tmp_spec_p, value, value_len);
4225 tmp_spec_p += value_len;
4226 q = p + strlen ("%(VALUE)");
4228 strcpy (tmp_spec_p, q);
4230 do_self_spec (tmp_spec);
4233 /* Process the given spec string and add any new options to the end
4234 of the switches/n_switches array. */
4237 do_self_spec (const char *spec)
4242 do_spec_1 (" ", 0, NULL);
4244 /* Mark %<S switches processed by do_self_spec to be ignored permanently.
4245 do_self_specs adds the replacements to switches array, so it shouldn't
4246 be processed afterwards. */
4247 for (i = 0; i < n_switches; i++)
4248 if ((switches[i].live_cond & SWITCH_IGNORE))
4249 switches[i].live_cond |= SWITCH_IGNORE_PERMANENTLY;
4251 if (argbuf_index > 0)
4253 switches = XRESIZEVEC (struct switchstr, switches,
4254 n_switches + argbuf_index + 1);
4256 for (i = 0; i < argbuf_index; i++)
4258 struct switchstr *sw;
4259 const char *p = argbuf[i];
4262 /* Each switch should start with '-'. */
4264 fatal_error ("switch %qs does not start with %<-%>", argbuf[i]);
4269 sw = &switches[n_switches++];
4275 /* Deal with option arguments in separate argv elements. */
4276 if ((SWITCH_TAKES_ARG (c) > (p[1] != 0))
4277 || WORD_SWITCH_TAKES_ARG (p))
4280 int n_args = WORD_SWITCH_TAKES_ARG (p);
4284 /* Count only the option arguments in separate argv elements. */
4285 n_args = SWITCH_TAKES_ARG (c) - (p[1] != 0);
4287 if (i + n_args >= argbuf_index)
4288 fatal_error ("argument to %<-%s%> is missing", p);
4290 = XNEWVEC (const char *, n_args + 1);
4292 sw->args[j++] = argbuf[++i];
4293 /* Null-terminate the vector. */
4298 /* On some systems, ld cannot handle "-o" without
4299 a space. So split the option from its argument. */
4300 char *part1 = XNEWVEC (char, 2);
4305 sw->args = XNEWVEC (const char *, 2);
4306 sw->args[0] = xstrdup (p+1);
4313 switches[n_switches].part1 = 0;
4317 /* Callback for processing %D and %I specs. */
4319 struct spec_path_info {
4324 bool separate_options;
4328 spec_path (char *path, void *data)
4330 struct spec_path_info *info = (struct spec_path_info *) data;
4334 if (info->omit_relative && !IS_ABSOLUTE_PATH (path))
4337 if (info->append_len != 0)
4339 len = strlen (path);
4340 memcpy (path + len, info->append, info->append_len + 1);
4343 if (!is_directory (path, true))
4346 do_spec_1 (info->option, 1, NULL);
4347 if (info->separate_options)
4348 do_spec_1 (" ", 0, NULL);
4350 if (info->append_len == 0)
4352 len = strlen (path);
4353 save = path[len - 1];
4354 if (IS_DIR_SEPARATOR (path[len - 1]))
4355 path[len - 1] = '\0';
4358 do_spec_1 (path, 1, NULL);
4359 do_spec_1 (" ", 0, NULL);
4361 /* Must not damage the original path. */
4362 if (info->append_len == 0)
4363 path[len - 1] = save;
4368 /* Create a temporary FILE with the contents of ARGV. Add @FILE to the
4372 create_at_file (char **argv)
4374 char *temp_file = make_temp_file ("");
4375 char *at_argument = concat ("@", temp_file, NULL);
4376 FILE *f = fopen (temp_file, "w");
4380 fatal_error ("could not open temporary response file %s",
4383 status = writeargv (argv, f);
4386 fatal_error ("could not write to temporary response file %s",
4389 status = fclose (f);
4392 fatal_error ("could not close temporary response file %s",
4395 store_arg (at_argument, 0, 0);
4397 record_temp_file (temp_file, !save_temps_flag, !save_temps_flag);
4400 /* True if we should compile INFILE. */
4403 compile_input_file_p (struct infile *infile)
4405 if ((!infile->language) || (infile->language[0] != '*'))
4406 if (infile->incompiler == input_file_compiler)
4411 /* Process the sub-spec SPEC as a portion of a larger spec.
4412 This is like processing a whole spec except that we do
4413 not initialize at the beginning and we do not supply a
4414 newline by default at the end.
4415 INSWITCH nonzero means don't process %-sequences in SPEC;
4416 in this case, % is treated as an ordinary character.
4417 This is used while substituting switches.
4418 INSWITCH nonzero also causes SPC not to terminate an argument.
4420 Value is zero unless a line was finished
4421 and the command on that line reported an error. */
4424 do_spec_1 (const char *spec, int inswitch, const char *soft_matched_part)
4426 const char *p = spec;
4432 /* If substituting a switch, treat all chars like letters.
4433 Otherwise, NL, SPC, TAB and % are special. */
4434 switch (inswitch ? 'a' : c)
4439 if (argbuf_index > 0 && !strcmp (argbuf[argbuf_index - 1], "|"))
4441 /* A `|' before the newline means use a pipe here,
4442 but only if -pipe was specified.
4443 Otherwise, execute now and don't pass the `|' as an arg. */
4446 input_from_pipe = 1;
4453 set_collect_gcc_options ();
4455 if (argbuf_index > 0)
4461 /* Reinitialize for a new command, and for a new argument. */
4464 delete_this_arg = 0;
4465 this_is_output_file = 0;
4466 this_is_library_file = 0;
4467 this_is_linker_script = 0;
4468 input_from_pipe = 0;
4475 obstack_1grow (&obstack, c);
4483 /* Reinitialize for a new argument. */
4484 delete_this_arg = 0;
4485 this_is_output_file = 0;
4486 this_is_library_file = 0;
4487 this_is_linker_script = 0;
4494 fatal_error ("spec %qs invalid", spec);
4497 if (save_temps_length)
4498 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4500 obstack_grow (&obstack, input_basename, basename_length);
4501 if (compare_debug < 0)
4502 obstack_grow (&obstack, ".gk", 3);
4507 if (save_temps_length)
4508 obstack_grow (&obstack, save_temps_prefix, save_temps_length);
4510 obstack_grow (&obstack, input_basename, suffixed_basename_length);
4511 if (compare_debug < 0)
4512 obstack_grow (&obstack, ".gk", 3);
4517 delete_this_arg = 2;
4520 /* Dump out the directories specified with LIBRARY_PATH,
4521 followed by the absolute directories
4522 that we search for startfiles. */
4525 struct spec_path_info info;
4528 info.append_len = 0;
4529 #ifdef RELATIVE_PREFIX_NOT_LINKDIR
4530 /* Used on systems which record the specified -L dirs
4531 and use them to search for dynamic linking.
4532 Relative directories always come from -B,
4533 and it is better not to use them for searching
4534 at run time. In particular, stage1 loses. */
4535 info.omit_relative = true;
4537 info.omit_relative = false;
4539 info.separate_options = false;
4541 for_each_path (&startfile_prefixes, true, 0, spec_path, &info);
4546 /* %efoo means report an error with `foo' as error message
4547 and don't execute any more commands for this file. */
4551 while (*p != 0 && *p != '\n')
4553 buf = (char *) alloca (p - q + 1);
4554 strncpy (buf, q, p - q);
4556 error ("%s", _(buf));
4561 /* %nfoo means report a notice with `foo' on stderr. */
4565 while (*p != 0 && *p != '\n')
4567 buf = (char *) alloca (p - q + 1);
4568 strncpy (buf, q, p - q);
4570 inform (0, "%s", _(buf));
4580 /* If save_temps_flag is off, and the HOST_BIT_BUCKET is
4581 defined, and it is not a directory, and it is
4582 writable, use it. Otherwise, treat this like any
4583 other temporary file. */
4585 if ((!save_temps_flag)
4586 && (stat (HOST_BIT_BUCKET, &st) == 0) && (!S_ISDIR (st.st_mode))
4587 && (access (HOST_BIT_BUCKET, W_OK) == 0))
4589 obstack_grow (&obstack, HOST_BIT_BUCKET,
4590 strlen (HOST_BIT_BUCKET));
4591 delete_this_arg = 0;
4596 goto create_temp_file;
4600 obstack_1grow (&obstack, '-');
4601 delete_this_arg = 0;
4604 /* consume suffix */
4605 while (*p == '.' || ISALNUM ((unsigned char) *p))
4607 if (p[0] == '%' && p[1] == 'O')
4612 goto create_temp_file;
4616 /* consume suffix */
4617 while (*p == '.' || ISALNUM ((unsigned char) *p))
4619 if (p[0] == '%' && p[1] == 'O')
4624 goto create_temp_file;
4630 struct temp_name *t;
4632 const char *suffix = p;
4633 char *saved_suffix = NULL;
4635 while (*p == '.' || ISALNUM ((unsigned char) *p))
4637 suffix_length = p - suffix;
4638 if (p[0] == '%' && p[1] == 'O')
4641 /* We don't support extra suffix characters after %O. */
4642 if (*p == '.' || ISALNUM ((unsigned char) *p))
4643 fatal_error ("spec %qs has invalid %<%%0%c%>", spec, *p);
4644 if (suffix_length == 0)
4645 suffix = TARGET_OBJECT_SUFFIX;
4649 = XNEWVEC (char, suffix_length
4650 + strlen (TARGET_OBJECT_SUFFIX));
4651 strncpy (saved_suffix, suffix, suffix_length);
4652 strcpy (saved_suffix + suffix_length,
4653 TARGET_OBJECT_SUFFIX);
4655 suffix_length += strlen (TARGET_OBJECT_SUFFIX);
4658 if (compare_debug < 0)
4660 suffix = concat (".gk", suffix, NULL);
4664 /* If -save-temps=obj and -o were specified, use that for the
4666 if (save_temps_length)
4669 temp_filename_length
4670 = save_temps_length + suffix_length + 1;
4671 tmp = (char *) alloca (temp_filename_length);
4672 memcpy (tmp, save_temps_prefix, save_temps_length);
4673 memcpy (tmp + save_temps_length, suffix, suffix_length);
4674 tmp[save_temps_length + suffix_length] = '\0';
4675 temp_filename = save_string (tmp,
4676 temp_filename_length + 1);
4677 obstack_grow (&obstack, temp_filename,
4678 temp_filename_length);
4680 delete_this_arg = 0;
4684 /* If the gcc_input_filename has the same suffix specified
4685 for the %g, %u, or %U, and -save-temps is specified,
4686 we could end up using that file as an intermediate
4687 thus clobbering the user's source file (.e.g.,
4688 gcc -save-temps foo.s would clobber foo.s with the
4689 output of cpp0). So check for this condition and
4690 generate a temp file as the intermediate. */
4692 if (save_temps_flag)
4695 temp_filename_length = basename_length + suffix_length + 1;
4696 tmp = (char *) alloca (temp_filename_length);
4697 memcpy (tmp, input_basename, basename_length);
4698 memcpy (tmp + basename_length, suffix, suffix_length);
4699 tmp[basename_length + suffix_length] = '\0';
4700 temp_filename = tmp;
4702 if (strcmp (temp_filename, gcc_input_filename) != 0)
4704 #ifndef HOST_LACKS_INODE_NUMBERS
4705 struct stat st_temp;
4707 /* Note, set_input() resets input_stat_set to 0. */
4708 if (input_stat_set == 0)
4710 input_stat_set = stat (gcc_input_filename,
4712 if (input_stat_set >= 0)
4716 /* If we have the stat for the gcc_input_filename
4717 and we can do the stat for the temp_filename
4718 then the they could still refer to the same
4719 file if st_dev/st_ino's are the same. */
4720 if (input_stat_set != 1
4721 || stat (temp_filename, &st_temp) < 0
4722 || input_stat.st_dev != st_temp.st_dev
4723 || input_stat.st_ino != st_temp.st_ino)
4725 /* Just compare canonical pathnames. */
4726 char* input_realname = lrealpath (gcc_input_filename);
4727 char* temp_realname = lrealpath (temp_filename);
4728 bool files_differ = strcmp (input_realname, temp_realname);
4729 free (input_realname);
4730 free (temp_realname);
4734 temp_filename = save_string (temp_filename,
4735 temp_filename_length + 1);
4736 obstack_grow (&obstack, temp_filename,
4737 temp_filename_length);
4739 delete_this_arg = 0;
4745 /* See if we already have an association of %g/%u/%U and
4747 for (t = temp_names; t; t = t->next)
4748 if (t->length == suffix_length
4749 && strncmp (t->suffix, suffix, suffix_length) == 0
4750 && t->unique == (c == 'u' || c == 'U' || c == 'j'))
4753 /* Make a new association if needed. %u and %j
4755 if (t == 0 || c == 'u' || c == 'j')
4759 t = XNEW (struct temp_name);
4760 t->next = temp_names;
4763 t->length = suffix_length;
4766 t->suffix = saved_suffix;
4767 saved_suffix = NULL;
4770 t->suffix = save_string (suffix, suffix_length);
4771 t->unique = (c == 'u' || c == 'U' || c == 'j');
4772 temp_filename = make_temp_file (t->suffix);
4773 temp_filename_length = strlen (temp_filename);
4774 t->filename = temp_filename;
4775 t->filename_length = temp_filename_length;
4779 free (saved_suffix);
4781 obstack_grow (&obstack, t->filename, t->filename_length);
4782 delete_this_arg = 1;
4790 if (at_file_supplied)
4792 /* We are going to expand `%i' to `@FILE', where FILE
4793 is a newly-created temporary filename. The filenames
4794 that would usually be expanded in place of %o will be
4795 written to the temporary file. */
4800 for (i = 0; i < n_infiles; i++)
4801 if (compile_input_file_p (&infiles[i]))
4804 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4806 /* Copy the strings over. */
4807 for (i = 0, j = 0; i < n_infiles; i++)
4808 if (compile_input_file_p (&infiles[i]))
4810 argv[j] = CONST_CAST (char *, infiles[i].name);
4811 infiles[i].compiled = true;
4816 create_at_file (argv);
4819 for (i = 0; (int) i < n_infiles; i++)
4820 if (compile_input_file_p (&infiles[i]))
4822 store_arg (infiles[i].name, 0, 0);
4823 infiles[i].compiled = true;
4828 obstack_grow (&obstack, gcc_input_filename,
4829 input_filename_length);
4836 struct spec_path_info info;
4840 do_spec_1 ("-imultilib", 1, NULL);
4841 /* Make this a separate argument. */
4842 do_spec_1 (" ", 0, NULL);
4843 do_spec_1 (multilib_dir, 1, NULL);
4844 do_spec_1 (" ", 0, NULL);
4847 if (gcc_exec_prefix)
4849 do_spec_1 ("-iprefix", 1, NULL);
4850 /* Make this a separate argument. */
4851 do_spec_1 (" ", 0, NULL);
4852 do_spec_1 (gcc_exec_prefix, 1, NULL);
4853 do_spec_1 (" ", 0, NULL);
4856 if (target_system_root_changed ||
4857 (target_system_root && target_sysroot_hdrs_suffix))
4859 do_spec_1 ("-isysroot", 1, NULL);
4860 /* Make this a separate argument. */
4861 do_spec_1 (" ", 0, NULL);
4862 do_spec_1 (target_system_root, 1, NULL);
4863 if (target_sysroot_hdrs_suffix)
4864 do_spec_1 (target_sysroot_hdrs_suffix, 1, NULL);
4865 do_spec_1 (" ", 0, NULL);
4868 info.option = "-isystem";
4869 info.append = "include";
4870 info.append_len = strlen (info.append);
4871 info.omit_relative = false;
4872 info.separate_options = true;
4874 for_each_path (&include_prefixes, false, info.append_len,
4877 info.append = "include-fixed";
4878 if (*sysroot_hdrs_suffix_spec)
4879 info.append = concat (info.append, dir_separator_str,
4880 multilib_dir, NULL);
4881 info.append_len = strlen (info.append);
4882 for_each_path (&include_prefixes, false, info.append_len,
4889 int max = n_infiles;
4890 max += lang_specific_extra_outfiles;
4892 if (HAVE_GNU_LD && at_file_supplied)
4894 /* We are going to expand `%o' to `@FILE', where FILE
4895 is a newly-created temporary filename. The filenames
4896 that would usually be expanded in place of %o will be
4897 written to the temporary file. */
4902 /* Convert OUTFILES into a form suitable for writeargv. */
4904 /* Determine how many are non-NULL. */
4905 for (n_files = 0, i = 0; i < max; i++)
4906 n_files += outfiles[i] != NULL;
4908 argv = (char **) alloca (sizeof (char *) * (n_files + 1));
4910 /* Copy the strings over. */
4911 for (i = 0, j = 0; i < max; i++)
4914 argv[j] = CONST_CAST (char *, outfiles[i]);
4919 create_at_file (argv);
4922 for (i = 0; i < max; i++)
4924 store_arg (outfiles[i], 0, 0);
4929 obstack_grow (&obstack, TARGET_OBJECT_SUFFIX, strlen (TARGET_OBJECT_SUFFIX));
4934 this_is_library_file = 1;
4938 this_is_linker_script = 1;
4942 outfiles[input_file_number] = NULL;
4946 this_is_output_file = 1;
4951 int cur_index = argbuf_index;
4952 /* Handle the {...} following the %W. */
4954 fatal_error ("spec %qs has invalid %<%%W%c%>", spec, *p);
4955 p = handle_braces (p + 1);
4959 /* If any args were output, mark the last one for deletion
4961 if (argbuf_index != cur_index)
4962 record_temp_file (argbuf[argbuf_index - 1], 0, 1);
4966 /* %x{OPTION} records OPTION for %X to output. */
4972 /* Skip past the option value and make a copy. */
4974 fatal_error ("spec %qs has invalid %<%%x%c%>", spec, *p);
4977 string = save_string (p1 + 1, p - p1 - 2);
4979 /* See if we already recorded this option. */
4980 for (i = 0; i < n_linker_options; i++)
4981 if (! strcmp (string, linker_options[i]))
4987 /* This option is new; add it. */
4988 add_linker_option (string, strlen (string));
4992 /* Dump out the options accumulated previously using %x. */
4994 for (i = 0; i < n_linker_options; i++)
4996 do_spec_1 (linker_options[i], 1, NULL);
4997 /* Make each accumulated option a separate argument. */
4998 do_spec_1 (" ", 0, NULL);
5002 /* Dump out the options accumulated previously using -Wa,. */
5004 for (i = 0; i < n_assembler_options; i++)
5006 do_spec_1 (assembler_options[i], 1, NULL);
5007 /* Make each accumulated option a separate argument. */
5008 do_spec_1 (" ", 0, NULL);
5012 /* Dump out the options accumulated previously using -Wp,. */
5014 for (i = 0; i < n_preprocessor_options; i++)
5016 do_spec_1 (preprocessor_options[i], 1, NULL);
5017 /* Make each accumulated option a separate argument. */
5018 do_spec_1 (" ", 0, NULL);
5022 /* Here are digits and numbers that just process
5023 a certain constant string as a spec. */
5026 value = do_spec_1 (cc1_spec, 0, NULL);
5032 value = do_spec_1 (cc1plus_spec, 0, NULL);
5038 value = do_spec_1 (asm_spec, 0, NULL);
5044 value = do_spec_1 (asm_final_spec, 0, NULL);
5051 const char *const spec
5052 = (input_file_compiler->cpp_spec
5053 ? input_file_compiler->cpp_spec
5055 value = do_spec_1 (spec, 0, NULL);
5062 value = do_spec_1 (endfile_spec, 0, NULL);
5068 value = do_spec_1 (link_spec, 0, NULL);
5074 value = do_spec_1 (lib_spec, 0, NULL);
5080 value = do_spec_1 (libgcc_spec, 0, NULL);
5086 /* We assume there is a directory
5087 separator at the end of this string. */
5088 if (target_system_root)
5090 obstack_grow (&obstack, target_system_root,
5091 strlen (target_system_root));
5092 if (target_sysroot_suffix)
5093 obstack_grow (&obstack, target_sysroot_suffix,
5094 strlen (target_sysroot_suffix));
5099 value = do_spec_1 (startfile_spec, 0, NULL);
5104 /* Here we define characters other than letters and digits. */
5107 p = handle_braces (p);
5113 p = handle_spec_function (p);
5119 obstack_1grow (&obstack, '%');
5126 while (p[len] && p[len] != ' ' && p[len] != '%')
5128 suffix_subst = save_string (p - 1, len + 1);
5133 /* Henceforth ignore the option(s) matching the pattern
5138 int have_wildcard = 0;
5141 while (p[len] && p[len] != ' ' && p[len] != '\t')
5144 if (p[len-1] == '*')
5147 for (i = 0; i < n_switches; i++)
5148 if (!strncmp (switches[i].part1, p, len - have_wildcard)
5149 && (have_wildcard || switches[i].part1[len] == '\0'))
5151 switches[i].live_cond |= SWITCH_IGNORE;
5152 switches[i].validated = 1;
5160 if (soft_matched_part)
5162 do_spec_1 (soft_matched_part, 1, NULL);
5163 do_spec_1 (" ", 0, NULL);
5166 /* Catch the case where a spec string contains something like
5167 '%{foo:%*}'. i.e. there is no * in the pattern on the left
5168 hand side of the :. */
5169 error ("spec failure: %<%%*%> has not been initialized by pattern match");
5172 /* Process a string found as the value of a spec given by name.
5173 This feature allows individual machine descriptions
5174 to add and use their own specs.
5175 %[...] modifies -D options the way %P does;
5176 %(...) uses the spec unmodified. */
5178 warning (0, "use of obsolete %%[ operator in specs");
5181 const char *name = p;
5182 struct spec_list *sl;
5185 /* The string after the S/P is the name of a spec that is to be
5187 while (*p && *p != ')' && *p != ']')
5190 /* See if it's in the list. */
5191 for (len = p - name, sl = specs; sl; sl = sl->next)
5192 if (sl->name_len == len && !strncmp (sl->name, name, len))
5194 name = *(sl->ptr_spec);
5196 fnotice (stderr, "Processing spec %c%s%c, which is '%s'\n",
5197 c, sl->name, (c == '(') ? ')' : ']', name);
5206 value = do_spec_1 (name, 0, NULL);
5212 char *x = (char *) alloca (strlen (name) * 2 + 1);
5214 const char *y = name;
5217 /* Copy all of NAME into BUF, but put __ after
5218 every -D and at the end of each arg. */
5221 if (! strncmp (y, "-D", 2))
5232 && (*y == ' ' || *y == '\t' || *y == '='
5233 || *y == '}' || *y == 0))
5246 value = do_spec_1 (buf, 0, NULL);
5252 /* Discard the closing paren or bracket. */
5259 error ("spec failure: unrecognized spec option %qc", c);
5265 /* Backslash: treat next character as ordinary. */
5270 /* Ordinary character: put it into the current argument. */
5271 obstack_1grow (&obstack, c);
5275 /* End of string. If we are processing a spec function, we need to
5276 end any pending argument. */
5277 if (processing_spec_function)
5283 /* Look up a spec function. */
5285 static const struct spec_function *
5286 lookup_spec_function (const char *name)
5288 const struct spec_function *sf;
5290 for (sf = static_spec_functions; sf->name != NULL; sf++)
5291 if (strcmp (sf->name, name) == 0)
5297 /* Evaluate a spec function. */
5300 eval_spec_function (const char *func, const char *args)
5302 const struct spec_function *sf;
5303 const char *funcval;
5305 /* Saved spec processing context. */
5306 int save_argbuf_index;
5307 int save_argbuf_length;
5308 const char **save_argbuf;
5311 int save_delete_this_arg;
5312 int save_this_is_output_file;
5313 int save_this_is_library_file;
5314 int save_input_from_pipe;
5315 int save_this_is_linker_script;
5316 const char *save_suffix_subst;
5319 sf = lookup_spec_function (func);
5321 fatal_error ("unknown spec function %qs", func);
5323 /* Push the spec processing context. */
5324 save_argbuf_index = argbuf_index;
5325 save_argbuf_length = argbuf_length;
5326 save_argbuf = argbuf;
5328 save_arg_going = arg_going;
5329 save_delete_this_arg = delete_this_arg;
5330 save_this_is_output_file = this_is_output_file;
5331 save_this_is_library_file = this_is_library_file;
5332 save_this_is_linker_script = this_is_linker_script;
5333 save_input_from_pipe = input_from_pipe;
5334 save_suffix_subst = suffix_subst;
5336 /* Create a new spec processing context, and build the function
5340 if (do_spec_2 (args) < 0)
5341 fatal_error ("error in args to spec function %qs", func);
5343 /* argbuf_index is an index for the next argument to be inserted, and
5344 so contains the count of the args already inserted. */
5346 funcval = (*sf->func) (argbuf_index, argbuf);
5348 /* Pop the spec processing context. */
5349 argbuf_index = save_argbuf_index;
5350 argbuf_length = save_argbuf_length;
5352 argbuf = save_argbuf;
5354 arg_going = save_arg_going;
5355 delete_this_arg = save_delete_this_arg;
5356 this_is_output_file = save_this_is_output_file;
5357 this_is_library_file = save_this_is_library_file;
5358 this_is_linker_script = save_this_is_linker_script;
5359 input_from_pipe = save_input_from_pipe;
5360 suffix_subst = save_suffix_subst;
5365 /* Handle a spec function call of the form:
5369 ARGS is processed as a spec in a separate context and split into an
5370 argument vector in the normal fashion. The function returns a string
5371 containing a spec which we then process in the caller's context, or
5372 NULL if no processing is required. */
5375 handle_spec_function (const char *p)
5378 const char *endp, *funcval;
5381 processing_spec_function++;
5383 /* Get the function name. */
5384 for (endp = p; *endp != '\0'; endp++)
5386 if (*endp == '(') /* ) */
5388 /* Only allow [A-Za-z0-9], -, and _ in function names. */
5389 if (!ISALNUM (*endp) && !(*endp == '-' || *endp == '_'))
5390 fatal_error ("malformed spec function name");
5392 if (*endp != '(') /* ) */
5393 fatal_error ("no arguments for spec function");
5394 func = save_string (p, endp - p);
5397 /* Get the arguments. */
5398 for (count = 0; *endp != '\0'; endp++)
5407 else if (*endp == '(') /* ) */
5412 fatal_error ("malformed spec function arguments");
5413 args = save_string (p, endp - p);
5416 /* p now points to just past the end of the spec function expression. */
5418 funcval = eval_spec_function (func, args);
5419 if (funcval != NULL && do_spec_1 (funcval, 0, NULL) < 0)
5425 processing_spec_function--;
5430 /* Inline subroutine of handle_braces. Returns true if the current
5431 input suffix matches the atom bracketed by ATOM and END_ATOM. */
5433 input_suffix_matches (const char *atom, const char *end_atom)
5435 return (input_suffix
5436 && !strncmp (input_suffix, atom, end_atom - atom)
5437 && input_suffix[end_atom - atom] == '\0');
5440 /* Subroutine of handle_braces. Returns true if the current
5441 input file's spec name matches the atom bracketed by ATOM and END_ATOM. */
5443 input_spec_matches (const char *atom, const char *end_atom)
5445 return (input_file_compiler
5446 && input_file_compiler->suffix
5447 && input_file_compiler->suffix[0] != '\0'
5448 && !strncmp (input_file_compiler->suffix + 1, atom,
5450 && input_file_compiler->suffix[end_atom - atom + 1] == '\0');
5453 /* Subroutine of handle_braces. Returns true if a switch
5454 matching the atom bracketed by ATOM and END_ATOM appeared on the
5457 switch_matches (const char *atom, const char *end_atom, int starred)
5460 int len = end_atom - atom;
5461 int plen = starred ? len : -1;
5463 for (i = 0; i < n_switches; i++)
5464 if (!strncmp (switches[i].part1, atom, len)
5465 && (starred || switches[i].part1[len] == '\0')
5466 && check_live_switch (i, plen))
5472 /* Inline subroutine of handle_braces. Mark all of the switches which
5473 match ATOM (extends to END_ATOM; STARRED indicates whether there
5474 was a star after the atom) for later processing. */
5476 mark_matching_switches (const char *atom, const char *end_atom, int starred)
5479 int len = end_atom - atom;
5480 int plen = starred ? len : -1;
5482 for (i = 0; i < n_switches; i++)
5483 if (!strncmp (switches[i].part1, atom, len)
5484 && (starred || switches[i].part1[len] == '\0')
5485 && check_live_switch (i, plen))
5486 switches[i].ordering = 1;
5489 /* Inline subroutine of handle_braces. Process all the currently
5490 marked switches through give_switch, and clear the marks. */
5492 process_marked_switches (void)
5496 for (i = 0; i < n_switches; i++)
5497 if (switches[i].ordering == 1)
5499 switches[i].ordering = 0;
5504 /* Handle a %{ ... } construct. P points just inside the leading {.
5505 Returns a pointer one past the end of the brace block, or 0
5506 if we call do_spec_1 and that returns -1. */
5509 handle_braces (const char *p)
5511 const char *atom, *end_atom;
5512 const char *d_atom = NULL, *d_end_atom = NULL;
5513 const char *orig = p;
5521 bool a_must_be_last = false;
5522 bool ordered_set = false;
5523 bool disjunct_set = false;
5524 bool disj_matched = false;
5525 bool disj_starred = true;
5526 bool n_way_choice = false;
5527 bool n_way_matched = false;
5529 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
5536 /* Scan one "atom" (S in the description above of %{}, possibly
5537 with '!', '.', '@', ',', or '*' modifiers). */
5539 a_is_suffix = false;
5540 a_is_starred = false;
5541 a_is_negated = false;
5542 a_is_spectype = false;
5546 p++, a_is_negated = true;
5550 p++, a_is_suffix = true;
5552 p++, a_is_spectype = true;
5555 while (ISIDNUM(*p) || *p == '-' || *p == '+' || *p == '='
5556 || *p == ',' || *p == '.' || *p == '@')
5561 p++, a_is_starred = 1;
5567 /* Substitute the switch(es) indicated by the current atom. */
5569 if (disjunct_set || n_way_choice || a_is_negated || a_is_suffix
5570 || a_is_spectype || atom == end_atom)
5573 mark_matching_switches (atom, end_atom, a_is_starred);
5576 process_marked_switches ();
5580 /* Substitute some text if the current atom appears as a switch
5582 disjunct_set = true;
5586 if (atom == end_atom)
5588 if (!n_way_choice || disj_matched || *p == '|'
5589 || a_is_negated || a_is_suffix || a_is_spectype
5593 /* An empty term may appear as the last choice of an
5594 N-way choice set; it means "otherwise". */
5595 a_must_be_last = true;
5596 disj_matched = !n_way_matched;
5597 disj_starred = false;
5601 if ((a_is_suffix || a_is_spectype) && a_is_starred)
5605 disj_starred = false;
5607 /* Don't bother testing this atom if we already have a
5609 if (!disj_matched && !n_way_matched)
5612 a_matched = input_suffix_matches (atom, end_atom);
5613 else if (a_is_spectype)
5614 a_matched = input_spec_matches (atom, end_atom);
5616 a_matched = switch_matches (atom, end_atom, a_is_starred);
5618 if (a_matched != a_is_negated)
5620 disj_matched = true;
5622 d_end_atom = end_atom;
5629 /* Found the body, that is, the text to substitute if the
5630 current disjunction matches. */
5631 p = process_brace_body (p + 1, d_atom, d_end_atom, disj_starred,
5632 disj_matched && !n_way_matched);
5636 /* If we have an N-way choice, reset state for the next
5640 n_way_choice = true;
5641 n_way_matched |= disj_matched;
5642 disj_matched = false;
5643 disj_starred = true;
5644 d_atom = d_end_atom = NULL;
5653 while (*p++ != '}');
5658 fatal_error ("braced spec %qs is invalid at %qc", orig, *p);
5663 /* Subroutine of handle_braces. Scan and process a brace substitution body
5664 (X in the description of %{} syntax). P points one past the colon;
5665 ATOM and END_ATOM bracket the first atom which was found to be true
5666 (present) in the current disjunction; STARRED indicates whether all
5667 the atoms in the current disjunction were starred (for syntax validation);
5668 MATCHED indicates whether the disjunction matched or not, and therefore
5669 whether or not the body is to be processed through do_spec_1 or just
5670 skipped. Returns a pointer to the closing } or ;, or 0 if do_spec_1
5674 process_brace_body (const char *p, const char *atom, const char *end_atom,
5675 int starred, int matched)
5677 const char *body, *end_body;
5678 unsigned int nesting_level;
5679 bool have_subst = false;
5681 /* Locate the closing } or ;, honoring nested braces.
5682 Trim trailing whitespace. */
5691 if (!--nesting_level)
5694 else if (*p == ';' && nesting_level == 1)
5696 else if (*p == '%' && p[1] == '*' && nesting_level == 1)
5698 else if (*p == '\0')
5704 while (end_body[-1] == ' ' || end_body[-1] == '\t')
5707 if (have_subst && !starred)
5712 /* Copy the substitution body to permanent storage and execute it.
5713 If have_subst is false, this is a simple matter of running the
5714 body through do_spec_1... */
5715 char *string = save_string (body, end_body - body);
5718 if (do_spec_1 (string, 0, NULL) < 0)
5723 /* ... but if have_subst is true, we have to process the
5724 body once for each matching switch, with %* set to the
5725 variant part of the switch. */
5726 unsigned int hard_match_len = end_atom - atom;
5729 for (i = 0; i < n_switches; i++)
5730 if (!strncmp (switches[i].part1, atom, hard_match_len)
5731 && check_live_switch (i, hard_match_len))
5733 if (do_spec_1 (string, 0,
5734 &switches[i].part1[hard_match_len]) < 0)
5736 /* Pass any arguments this switch has. */
5738 suffix_subst = NULL;
5746 fatal_error ("braced spec body %qs is invalid", body);
5749 /* Return 0 iff switch number SWITCHNUM is obsoleted by a later switch
5750 on the command line. PREFIX_LENGTH is the length of XXX in an {XXX*}
5751 spec, or -1 if either exact match or %* is used.
5753 A -O switch is obsoleted by a later -O switch. A -f, -m, or -W switch
5754 whose value does not begin with "no-" is obsoleted by the same value
5755 with the "no-", similarly for a switch with the "no-" prefix. */
5758 check_live_switch (int switchnum, int prefix_length)
5760 const char *name = switches[switchnum].part1;
5763 /* If we already processed this switch and determined if it was
5764 live or not, return our past determination. */
5765 if (switches[switchnum].live_cond != 0)
5766 return ((switches[switchnum].live_cond & SWITCH_LIVE) != 0
5767 && (switches[switchnum].live_cond & SWITCH_FALSE) == 0
5768 && (switches[switchnum].live_cond & SWITCH_IGNORE_PERMANENTLY)
5771 /* In the common case of {<at-most-one-letter>*}, a negating
5772 switch would always match, so ignore that case. We will just
5773 send the conflicting switches to the compiler phase. */
5774 if (prefix_length >= 0 && prefix_length <= 1)
5777 /* Now search for duplicate in a manner that depends on the name. */
5781 for (i = switchnum + 1; i < n_switches; i++)
5782 if (switches[i].part1[0] == 'O')
5784 switches[switchnum].validated = 1;
5785 switches[switchnum].live_cond = SWITCH_FALSE;
5790 case 'W': case 'f': case 'm':
5791 if (! strncmp (name + 1, "no-", 3))
5793 /* We have Xno-YYY, search for XYYY. */
5794 for (i = switchnum + 1; i < n_switches; i++)
5795 if (switches[i].part1[0] == name[0]
5796 && ! strcmp (&switches[i].part1[1], &name[4]))
5798 switches[switchnum].validated = 1;
5799 switches[switchnum].live_cond = SWITCH_FALSE;
5805 /* We have XYYY, search for Xno-YYY. */
5806 for (i = switchnum + 1; i < n_switches; i++)
5807 if (switches[i].part1[0] == name[0]
5808 && switches[i].part1[1] == 'n'
5809 && switches[i].part1[2] == 'o'
5810 && switches[i].part1[3] == '-'
5811 && !strcmp (&switches[i].part1[4], &name[1]))
5813 switches[switchnum].validated = 1;
5814 switches[switchnum].live_cond = SWITCH_FALSE;
5821 /* Otherwise the switch is live. */
5822 switches[switchnum].live_cond |= SWITCH_LIVE;
5826 /* Pass a switch to the current accumulating command
5827 in the same form that we received it.
5828 SWITCHNUM identifies the switch; it is an index into
5829 the vector of switches gcc received, which is `switches'.
5830 This cannot fail since it never finishes a command line.
5832 If OMIT_FIRST_WORD is nonzero, then we omit .part1 of the argument. */
5835 give_switch (int switchnum, int omit_first_word)
5837 if ((switches[switchnum].live_cond & SWITCH_IGNORE) != 0)
5840 if (!omit_first_word)
5842 do_spec_1 ("-", 0, NULL);
5843 do_spec_1 (switches[switchnum].part1, 1, NULL);
5846 if (switches[switchnum].args != 0)
5849 for (p = switches[switchnum].args; *p; p++)
5851 const char *arg = *p;
5853 do_spec_1 (" ", 0, NULL);
5856 unsigned length = strlen (arg);
5859 while (length-- && !IS_DIR_SEPARATOR (arg[length]))
5860 if (arg[length] == '.')
5862 (CONST_CAST(char *, arg))[length] = 0;
5866 do_spec_1 (arg, 1, NULL);
5868 (CONST_CAST(char *, arg))[length] = '.';
5869 do_spec_1 (suffix_subst, 1, NULL);
5872 do_spec_1 (arg, 1, NULL);
5876 do_spec_1 (" ", 0, NULL);
5877 switches[switchnum].validated = 1;
5880 /* Search for a file named NAME trying various prefixes including the
5881 user's -B prefix and some standard ones.
5882 Return the absolute file name found. If nothing is found, return NAME. */
5885 find_file (const char *name)
5887 char *newname = find_a_file (&startfile_prefixes, name, R_OK, true);
5888 return newname ? newname : name;
5891 /* Determine whether a directory exists. If LINKER, return 0 for
5892 certain fixed names not needed by the linker. */
5895 is_directory (const char *path1, bool linker)
5902 /* Ensure the string ends with "/.". The resulting path will be a
5903 directory even if the given path is a symbolic link. */
5904 len1 = strlen (path1);
5905 path = (char *) alloca (3 + len1);
5906 memcpy (path, path1, len1);
5908 if (!IS_DIR_SEPARATOR (cp[-1]))
5909 *cp++ = DIR_SEPARATOR;
5913 /* Exclude directories that the linker is known to search. */
5915 && IS_DIR_SEPARATOR (path[0])
5917 && strncmp (path + 1, "lib", 3) == 0)
5919 && strncmp (path + 1, "usr", 3) == 0
5920 && IS_DIR_SEPARATOR (path[4])
5921 && strncmp (path + 5, "lib", 3) == 0)))
5924 return (stat (path, &st) >= 0 && S_ISDIR (st.st_mode));
5927 /* Set up the various global variables to indicate that we're processing
5928 the input file named FILENAME. */
5931 set_input (const char *filename)
5935 gcc_input_filename = filename;
5936 input_filename_length = strlen (gcc_input_filename);
5937 input_basename = lbasename (gcc_input_filename);
5939 /* Find a suffix starting with the last period,
5940 and set basename_length to exclude that suffix. */
5941 basename_length = strlen (input_basename);
5942 suffixed_basename_length = basename_length;
5943 p = input_basename + basename_length;
5944 while (p != input_basename && *p != '.')
5946 if (*p == '.' && p != input_basename)
5948 basename_length = p - input_basename;
5949 input_suffix = p + 1;
5954 /* If a spec for 'g', 'u', or 'U' is seen with -save-temps then
5955 we will need to do a stat on the gcc_input_filename. The
5956 INPUT_STAT_SET signals that the stat is needed. */
5960 /* On fatal signals, delete all the temporary files. */
5963 fatal_signal (int signum)
5965 signal (signum, SIG_DFL);
5966 delete_failure_queue ();
5967 delete_temp_files ();
5968 /* Get the same signal again, this time not handled,
5969 so its normal effect occurs. */
5970 kill (getpid (), signum);
5973 /* Compare the contents of the two files named CMPFILE[0] and
5974 CMPFILE[1]. Return zero if they're identical, nonzero
5978 compare_files (char *cmpfile[])
5981 FILE *temp[2] = { NULL, NULL };
5987 void *map[2] = { NULL, NULL };
5989 for (i = 0; i < 2; i++)
5993 if (stat (cmpfile[i], &st) < 0 || !S_ISREG (st.st_mode))
5995 error ("%s: could not determine length of compare-debug file %s",
5996 gcc_input_filename, cmpfile[i]);
6001 length[i] = st.st_size;
6004 if (!ret && length[0] != length[1])
6006 error ("%s: -fcompare-debug failure (length)", gcc_input_filename);
6011 for (i = 0; i < 2; i++)
6013 int fd = open (cmpfile[i], O_RDONLY);
6016 error ("%s: could not open compare-debug file %s",
6017 gcc_input_filename, cmpfile[i]);
6022 map[i] = mmap (NULL, length[i], PROT_READ, MAP_PRIVATE, fd, 0);
6025 if (map[i] == (void *) MAP_FAILED)
6034 if (memcmp (map[0], map[1], length[0]) != 0)
6036 error ("%s: -fcompare-debug failure", gcc_input_filename);
6041 for (i = 0; i < 2; i++)
6043 munmap ((caddr_t) map[i], length[i]);
6052 for (i = 0; i < 2; i++)
6054 temp[i] = fopen (cmpfile[i], "r");
6057 error ("%s: could not open compare-debug file %s",
6058 gcc_input_filename, cmpfile[i]);
6064 if (!ret && temp[0] && temp[1])
6068 c0 = fgetc (temp[0]);
6069 c1 = fgetc (temp[1]);
6073 error ("%s: -fcompare-debug failure",
6074 gcc_input_filename);
6083 for (i = 1; i >= 0; i--)
6092 extern int main (int, char **);
6095 main (int argc, char **argv)
6099 int linker_was_run = 0;
6100 int lang_n_infiles = 0;
6101 int num_linker_inputs = 0;
6102 char *explicit_link_files;
6105 struct user_specs *uptr;
6106 char **old_argv = argv;
6107 struct cl_decoded_option *decoded_options;
6108 unsigned int decoded_options_count;
6110 /* Initialize here, not in definition. The IRIX 6 O32 cc sometimes chokes
6111 on ?: in file-scope variable initializations. */
6112 asm_debug = ASM_DEBUG_SPEC;
6114 p = argv[0] + strlen (argv[0]);
6115 while (p != argv[0] && !IS_DIR_SEPARATOR (p[-1]))
6119 xmalloc_set_program_name (progname);
6121 expandargv (&argc, &argv);
6123 /* Determine if any expansions were made. */
6124 if (argv != old_argv)
6125 at_file_supplied = true;
6127 global_options = global_options_init;
6129 decode_cmdline_options_to_array (argc, CONST_CAST2 (const char **, char **,
6132 &decoded_options, &decoded_options_count);
6134 #ifdef GCC_DRIVER_HOST_INITIALIZATION
6135 /* Perform host dependent initialization when needed. */
6136 GCC_DRIVER_HOST_INITIALIZATION;
6139 /* Unlock the stdio streams. */
6140 unlock_std_streams ();
6142 gcc_init_libintl ();
6144 diagnostic_initialize (global_dc, 0);
6145 if (atexit (delete_temp_files) != 0)
6146 fatal_error ("atexit failed");
6148 if (signal (SIGINT, SIG_IGN) != SIG_IGN)
6149 signal (SIGINT, fatal_signal);
6151 if (signal (SIGHUP, SIG_IGN) != SIG_IGN)
6152 signal (SIGHUP, fatal_signal);
6154 if (signal (SIGTERM, SIG_IGN) != SIG_IGN)
6155 signal (SIGTERM, fatal_signal);
6157 if (signal (SIGPIPE, SIG_IGN) != SIG_IGN)
6158 signal (SIGPIPE, fatal_signal);
6161 /* We *MUST* set SIGCHLD to SIG_DFL so that the wait4() call will
6162 receive the signal. A different setting is inheritable */
6163 signal (SIGCHLD, SIG_DFL);
6166 /* Allocate the argument vector. */
6169 obstack_init (&obstack);
6171 /* Build multilib_select, et. al from the separate lines that make up each
6172 multilib selection. */
6174 const char *const *q = multilib_raw;
6177 obstack_init (&multilib_obstack);
6178 while ((p = *q++) != (char *) 0)
6179 obstack_grow (&multilib_obstack, p, strlen (p));
6181 obstack_1grow (&multilib_obstack, 0);
6182 multilib_select = XOBFINISH (&multilib_obstack, const char *);
6184 q = multilib_matches_raw;
6185 while ((p = *q++) != (char *) 0)
6186 obstack_grow (&multilib_obstack, p, strlen (p));
6188 obstack_1grow (&multilib_obstack, 0);
6189 multilib_matches = XOBFINISH (&multilib_obstack, const char *);
6191 q = multilib_exclusions_raw;
6192 while ((p = *q++) != (char *) 0)
6193 obstack_grow (&multilib_obstack, p, strlen (p));
6195 obstack_1grow (&multilib_obstack, 0);
6196 multilib_exclusions = XOBFINISH (&multilib_obstack, const char *);
6199 for (i = 0; i < ARRAY_SIZE (multilib_defaults_raw); i++)
6202 obstack_1grow (&multilib_obstack, ' ');
6203 obstack_grow (&multilib_obstack,
6204 multilib_defaults_raw[i],
6205 strlen (multilib_defaults_raw[i]));
6209 obstack_1grow (&multilib_obstack, 0);
6210 multilib_defaults = XOBFINISH (&multilib_obstack, const char *);
6213 #ifdef INIT_ENVIRONMENT
6214 /* Set up any other necessary machine specific environment variables. */
6215 xputenv (INIT_ENVIRONMENT);
6218 /* Make a table of what switches there are (switches, n_switches).
6219 Make a table of specified input files (infiles, n_infiles).
6220 Decode switches that are handled locally. */
6222 process_command (decoded_options_count, decoded_options);
6224 /* Initialize the vector of specs to just the default.
6225 This means one element containing 0s, as a terminator. */
6227 compilers = XNEWVAR (struct compiler, sizeof default_compilers);
6228 memcpy (compilers, default_compilers, sizeof default_compilers);
6229 n_compilers = n_default_compilers;
6231 /* Read specs from a file if there is one. */
6233 machine_suffix = concat (spec_machine, dir_separator_str,
6234 spec_version, dir_separator_str, NULL);
6235 just_machine_suffix = concat (spec_machine, dir_separator_str, NULL);
6237 specs_file = find_a_file (&startfile_prefixes, "specs", R_OK, true);
6238 /* Read the specs file unless it is a default one. */
6239 if (specs_file != 0 && strcmp (specs_file, "specs"))
6240 read_specs (specs_file, TRUE);
6244 /* We need to check standard_exec_prefix/just_machine_suffix/specs
6245 for any override of as, ld and libraries. */
6246 specs_file = (char *) alloca (strlen (standard_exec_prefix)
6247 + strlen (just_machine_suffix) + sizeof ("specs"));
6249 strcpy (specs_file, standard_exec_prefix);
6250 strcat (specs_file, just_machine_suffix);
6251 strcat (specs_file, "specs");
6252 if (access (specs_file, R_OK) == 0)
6253 read_specs (specs_file, TRUE);
6255 /* Process any configure-time defaults specified for the command line
6256 options, via OPTION_DEFAULT_SPECS. */
6257 for (i = 0; i < ARRAY_SIZE (option_default_specs); i++)
6258 do_option_spec (option_default_specs[i].name,
6259 option_default_specs[i].spec);
6261 /* Process DRIVER_SELF_SPECS, adding any new options to the end
6262 of the command line. */
6264 for (i = 0; i < ARRAY_SIZE (driver_self_specs); i++)
6265 do_self_spec (driver_self_specs[i]);
6269 enum save_temps save;
6271 if (!compare_debug_second)
6273 n_switches_debug_check[1] = n_switches;
6274 switches_debug_check[1] = XDUPVEC (struct switchstr, switches,
6277 do_self_spec ("%:compare-debug-self-opt()");
6278 n_switches_debug_check[0] = n_switches;
6279 switches_debug_check[0] = switches;
6281 n_switches = n_switches_debug_check[1];
6282 switches = switches_debug_check[1];
6285 /* Avoid crash when computing %j in this early. */
6286 save = save_temps_flag;
6287 save_temps_flag = SAVE_TEMPS_NONE;
6289 compare_debug = -compare_debug;
6290 do_self_spec ("%:compare-debug-self-opt()");
6292 save_temps_flag = save;
6294 if (!compare_debug_second)
6296 n_switches_debug_check[1] = n_switches;
6297 switches_debug_check[1] = switches;
6298 compare_debug = -compare_debug;
6299 n_switches = n_switches_debug_check[0];
6300 switches = switches_debug_check[0];
6304 /* If not cross-compiling, look for executables in the standard
6306 if (*cross_compile == '0')
6308 if (*md_exec_prefix)
6310 add_prefix (&exec_prefixes, md_exec_prefix, "GCC",
6311 PREFIX_PRIORITY_LAST, 0, 0);
6315 /* Process sysroot_suffix_spec. */
6316 if (*sysroot_suffix_spec != 0
6317 && do_spec_2 (sysroot_suffix_spec) == 0)
6319 if (argbuf_index > 1)
6320 error ("spec failure: more than one arg to SYSROOT_SUFFIX_SPEC");
6321 else if (argbuf_index == 1)
6322 target_sysroot_suffix = xstrdup (argbuf[argbuf_index -1]);
6325 #ifdef HAVE_LD_SYSROOT
6326 /* Pass the --sysroot option to the linker, if it supports that. If
6327 there is a sysroot_suffix_spec, it has already been processed by
6328 this point, so target_system_root really is the system root we
6330 if (target_system_root)
6332 obstack_grow (&obstack, "%(sysroot_spec) ", strlen ("%(sysroot_spec) "));
6333 obstack_grow0 (&obstack, link_spec, strlen (link_spec));
6334 set_spec ("link", XOBFINISH (&obstack, const char *));
6338 /* Process sysroot_hdrs_suffix_spec. */
6339 if (*sysroot_hdrs_suffix_spec != 0
6340 && do_spec_2 (sysroot_hdrs_suffix_spec) == 0)
6342 if (argbuf_index > 1)
6343 error ("spec failure: more than one arg to SYSROOT_HEADERS_SUFFIX_SPEC");
6344 else if (argbuf_index == 1)
6345 target_sysroot_hdrs_suffix = xstrdup (argbuf[argbuf_index -1]);
6348 /* Look for startfiles in the standard places. */
6349 if (*startfile_prefix_spec != 0
6350 && do_spec_2 (startfile_prefix_spec) == 0
6351 && do_spec_1 (" ", 0, NULL) == 0)
6354 for (ndx = 0; ndx < argbuf_index; ndx++)
6355 add_sysrooted_prefix (&startfile_prefixes, argbuf[ndx], "BINUTILS",
6356 PREFIX_PRIORITY_LAST, 0, 1);
6358 /* We should eventually get rid of all these and stick to
6359 startfile_prefix_spec exclusively. */
6360 else if (*cross_compile == '0' || target_system_root)
6362 if (*md_startfile_prefix)
6363 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix,
6364 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6366 if (*md_startfile_prefix_1)
6367 add_sysrooted_prefix (&startfile_prefixes, md_startfile_prefix_1,
6368 "GCC", PREFIX_PRIORITY_LAST, 0, 1);
6370 /* If standard_startfile_prefix is relative, base it on
6371 standard_exec_prefix. This lets us move the installed tree
6372 as a unit. If GCC_EXEC_PREFIX is defined, base
6373 standard_startfile_prefix on that as well.
6375 If the prefix is relative, only search it for native compilers;
6376 otherwise we will search a directory containing host libraries. */
6377 if (IS_ABSOLUTE_PATH (standard_startfile_prefix))
6378 add_sysrooted_prefix (&startfile_prefixes,
6379 standard_startfile_prefix, "BINUTILS",
6380 PREFIX_PRIORITY_LAST, 0, 1);
6381 else if (*cross_compile == '0')
6383 add_prefix (&startfile_prefixes,
6384 concat (gcc_exec_prefix
6385 ? gcc_exec_prefix : standard_exec_prefix,
6387 standard_startfile_prefix, NULL),
6388 NULL, PREFIX_PRIORITY_LAST, 0, 1);
6391 /* Sysrooted prefixes are relocated because target_system_root is
6392 also relocated by gcc_exec_prefix. */
6393 if (*standard_startfile_prefix_1)
6394 add_sysrooted_prefix (&startfile_prefixes,
6395 standard_startfile_prefix_1, "BINUTILS",
6396 PREFIX_PRIORITY_LAST, 0, 1);
6397 if (*standard_startfile_prefix_2)
6398 add_sysrooted_prefix (&startfile_prefixes,
6399 standard_startfile_prefix_2, "BINUTILS",
6400 PREFIX_PRIORITY_LAST, 0, 1);
6403 /* Process any user specified specs in the order given on the command
6405 for (uptr = user_specs_head; uptr; uptr = uptr->next)
6407 char *filename = find_a_file (&startfile_prefixes, uptr->filename,
6409 read_specs (filename ? filename : uptr->filename, FALSE);
6412 /* If we have a GCC_EXEC_PREFIX envvar, modify it for cpp's sake. */
6413 if (gcc_exec_prefix)
6414 gcc_exec_prefix = concat (gcc_exec_prefix, spec_machine, dir_separator_str,
6415 spec_version, dir_separator_str, NULL);
6417 /* Now we have the specs.
6418 Set the `valid' bits for switches that match anything in any spec. */
6420 validate_all_switches ();
6422 /* Now that we have the switches and the specs, set
6423 the subdirectory based on the options. */
6424 set_multilib_dir ();
6426 /* Set up to remember the pathname of gcc and any options
6427 needed for collect. We use argv[0] instead of progname because
6428 we need the complete pathname. */
6429 obstack_init (&collect_obstack);
6430 obstack_grow (&collect_obstack, "COLLECT_GCC=", sizeof ("COLLECT_GCC=") - 1);
6431 obstack_grow (&collect_obstack, argv[0], strlen (argv[0]) + 1);
6432 xputenv (XOBFINISH (&collect_obstack, char *));
6434 /* Set up to remember the pathname of the lto wrapper. */
6436 lto_wrapper_spec = find_a_file (&exec_prefixes, "lto-wrapper", X_OK, false);
6437 if (lto_wrapper_spec)
6439 obstack_init (&collect_obstack);
6440 obstack_grow (&collect_obstack, "COLLECT_LTO_WRAPPER=",
6441 sizeof ("COLLECT_LTO_WRAPPER=") - 1);
6442 obstack_grow (&collect_obstack, lto_wrapper_spec,
6443 strlen (lto_wrapper_spec) + 1);
6444 xputenv (XOBFINISH (&collect_obstack, char *));
6447 /* Warn about any switches that no pass was interested in. */
6449 for (i = 0; (int) i < n_switches; i++)
6450 if (! switches[i].validated)
6451 error ("unrecognized option %<-%s%>", switches[i].part1);
6453 /* Obey some of the options. */
6455 if (print_search_dirs)
6457 printf (_("install: %s%s\n"),
6458 gcc_exec_prefix ? gcc_exec_prefix : standard_exec_prefix,
6459 gcc_exec_prefix ? "" : machine_suffix);
6460 printf (_("programs: %s\n"),
6461 build_search_list (&exec_prefixes, "", false, false));
6462 printf (_("libraries: %s\n"),
6463 build_search_list (&startfile_prefixes, "", false, true));
6467 if (print_file_name)
6469 printf ("%s\n", find_file (print_file_name));
6473 if (print_prog_name)
6475 char *newname = find_a_file (&exec_prefixes, print_prog_name, X_OK, 0);
6476 printf ("%s\n", (newname ? newname : print_prog_name));
6480 if (print_multi_lib)
6482 print_multilib_info ();
6486 if (print_multi_directory)
6488 if (multilib_dir == NULL)
6491 printf ("%s\n", multilib_dir);
6497 if (target_system_root)
6499 if (target_sysroot_suffix)
6500 printf ("%s%s\n", target_system_root, target_sysroot_suffix);
6502 printf ("%s\n", target_system_root);
6507 if (print_multi_os_directory)
6509 if (multilib_os_dir == NULL)
6512 printf ("%s\n", multilib_os_dir);
6516 if (print_sysroot_headers_suffix)
6518 if (*sysroot_hdrs_suffix_spec)
6520 printf("%s\n", (target_sysroot_hdrs_suffix
6521 ? target_sysroot_hdrs_suffix
6526 /* The error status indicates that only one set of fixed
6527 headers should be built. */
6528 fatal_error ("not configured with sysroot headers suffix");
6531 if (print_help_list)
6537 printf (_("\nFor bug reporting instructions, please see:\n"));
6538 printf ("%s.\n", bug_report_url);
6543 /* We do not exit here. Instead we have created a fake input file
6544 called 'help-dummy' which needs to be compiled, and we pass this
6545 on the various sub-processes, along with the --help switch.
6546 Ensure their output appears after ours. */
6547 fputc ('\n', stdout);
6553 printf (_("%s %s%s\n"), progname, pkgversion_string,
6555 printf ("Copyright %s 2010 Free Software Foundation, Inc.\n",
6557 fputs (_("This is free software; see the source for copying conditions. There is NO\n\
6558 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.\n\n"),
6563 /* We do not exit here. We use the same mechanism of --help to print
6564 the version of the sub-processes. */
6565 fputc ('\n', stdout);
6574 fnotice (stderr, "Target: %s\n", spec_machine);
6575 fnotice (stderr, "Configured with: %s\n", configuration_arguments);
6577 #ifdef THREAD_MODEL_SPEC
6578 /* We could have defined THREAD_MODEL_SPEC to "%*" by default,
6579 but there's no point in doing all this processing just to get
6580 thread_model back. */
6581 obstack_init (&obstack);
6582 do_spec_1 (THREAD_MODEL_SPEC, 0, thread_model);
6583 obstack_1grow (&obstack, '\0');
6584 thrmod = XOBFINISH (&obstack, const char *);
6586 thrmod = thread_model;
6589 fnotice (stderr, "Thread model: %s\n", thrmod);
6591 /* compiler_version is truncated at the first space when initialized
6592 from version string, so truncate version_string at the first space
6593 before comparing. */
6594 for (n = 0; version_string[n]; n++)
6595 if (version_string[n] == ' ')
6598 if (! strncmp (version_string, compiler_version, n)
6599 && compiler_version[n] == 0)
6600 fnotice (stderr, "gcc version %s %s\n", version_string,
6603 fnotice (stderr, "gcc driver version %s %sexecuting gcc version %s\n",
6604 version_string, pkgversion_string, compiler_version);
6610 if (n_infiles == added_libraries)
6611 fatal_error ("no input files");
6613 /* Make a place to record the compiler output file names
6614 that correspond to the input files. */
6617 i += lang_specific_extra_outfiles;
6618 outfiles = XCNEWVEC (const char *, i);
6620 /* Record which files were specified explicitly as link input. */
6622 explicit_link_files = XCNEWVEC (char, n_infiles);
6624 combine_inputs = have_o || flag_wpa;
6626 for (i = 0; (int) i < n_infiles; i++)
6628 const char *name = infiles[i].name;
6629 struct compiler *compiler = lookup_compiler (name,
6631 infiles[i].language);
6633 if (compiler && !(compiler->combinable))
6634 combine_inputs = false;
6636 if (lang_n_infiles > 0 && compiler != input_file_compiler
6637 && infiles[i].language && infiles[i].language[0] != '*')
6638 infiles[i].incompiler = compiler;
6642 input_file_compiler = compiler;
6643 infiles[i].incompiler = compiler;
6647 /* Since there is no compiler for this input file, assume it is a
6649 explicit_link_files[i] = 1;
6650 infiles[i].incompiler = NULL;
6652 infiles[i].compiled = false;
6653 infiles[i].preprocessed = false;
6656 if (!combine_inputs && have_c && have_o && lang_n_infiles > 1)
6657 fatal_error ("cannot specify -o with -c, -S or -E with multiple files");
6659 for (i = 0; (int) i < n_infiles; i++)
6661 int this_file_error = 0;
6663 /* Tell do_spec what to substitute for %i. */
6665 input_file_number = i;
6666 set_input (infiles[i].name);
6668 if (infiles[i].compiled)
6671 /* Use the same thing in %o, unless cp->spec says otherwise. */
6673 outfiles[i] = gcc_input_filename;
6675 /* Figure out which compiler from the file's suffix. */
6678 = lookup_compiler (infiles[i].name, input_filename_length,
6679 infiles[i].language);
6681 if (input_file_compiler)
6683 /* Ok, we found an applicable compiler. Run its spec. */
6685 if (input_file_compiler->spec[0] == '#')
6687 error ("%s: %s compiler not installed on this system",
6688 gcc_input_filename, &input_file_compiler->spec[1]);
6689 this_file_error = 1;
6695 if (debug_check_temp_file[0])
6696 free (debug_check_temp_file[0]);
6697 debug_check_temp_file[0] = NULL;
6699 if (debug_check_temp_file[1])
6700 free (debug_check_temp_file[1]);
6701 debug_check_temp_file[1] = NULL;
6704 value = do_spec (input_file_compiler->spec);
6705 infiles[i].compiled = true;
6707 this_file_error = 1;
6708 else if (compare_debug && debug_check_temp_file[0])
6711 inform (0, "recompiling with -fcompare-debug");
6713 compare_debug = -compare_debug;
6714 n_switches = n_switches_debug_check[1];
6715 switches = switches_debug_check[1];
6717 value = do_spec (input_file_compiler->spec);
6719 compare_debug = -compare_debug;
6720 n_switches = n_switches_debug_check[0];
6721 switches = switches_debug_check[0];
6725 error ("during -fcompare-debug recompilation");
6726 this_file_error = 1;
6729 gcc_assert (debug_check_temp_file[1]
6730 && strcmp (debug_check_temp_file[0],
6731 debug_check_temp_file[1]));
6734 inform (0, "comparing final insns dumps");
6736 if (compare_files (debug_check_temp_file))
6737 this_file_error = 1;
6742 if (debug_check_temp_file[0])
6743 free (debug_check_temp_file[0]);
6744 debug_check_temp_file[0] = NULL;
6746 if (debug_check_temp_file[1])
6747 free (debug_check_temp_file[1]);
6748 debug_check_temp_file[1] = NULL;
6753 /* If this file's name does not contain a recognized suffix,
6754 record it as explicit linker input. */
6757 explicit_link_files[i] = 1;
6759 /* Clear the delete-on-failure queue, deleting the files in it
6760 if this compilation failed. */
6762 if (this_file_error)
6764 delete_failure_queue ();
6767 /* If this compilation succeeded, don't delete those files later. */
6768 clear_failure_queue ();
6771 /* Reset the input file name to the first compile/object file name, for use
6772 with %b in LINK_SPEC. We use the first input file that we can find
6773 a compiler to compile it instead of using infiles.language since for
6774 languages other than C we use aliases that we then lookup later. */
6779 for (i = 0; i < n_infiles ; i++)
6780 if (infiles[i].language && infiles[i].language[0] != '*')
6782 set_input (infiles[i].name);
6789 /* Make sure INPUT_FILE_NUMBER points to first available open
6791 input_file_number = n_infiles;
6792 if (lang_specific_pre_link ())
6796 /* Determine if there are any linker input files. */
6797 num_linker_inputs = 0;
6798 for (i = 0; (int) i < n_infiles; i++)
6799 if (explicit_link_files[i] || outfiles[i] != NULL)
6800 num_linker_inputs++;
6802 /* Run ld to link all the compiler output files. */
6804 if (num_linker_inputs > 0 && !seen_error () && print_subprocess_help < 2)
6806 int tmp = execution_count;
6807 const char *fuse_linker_plugin = "fuse-linker-plugin";
6809 /* We'll use ld if we can't find collect2. */
6810 if (! strcmp (linker_name_spec, "collect2"))
6812 char *s = find_a_file (&exec_prefixes, "collect2", X_OK, false);
6814 linker_name_spec = "ld";
6817 if (switch_matches (fuse_linker_plugin,
6818 fuse_linker_plugin + strlen (fuse_linker_plugin), 0))
6820 linker_plugin_file_spec = find_a_file (&exec_prefixes,
6821 LTOPLUGINSONAME, R_OK,
6823 if (!linker_plugin_file_spec)
6824 fatal_error ("-fuse-linker-plugin, but " LTOPLUGINSONAME " not found");
6826 lto_libgcc_spec = find_a_file (&startfile_prefixes, "libgcc.a",
6828 if (!lto_libgcc_spec)
6829 fatal_error ("could not find libgcc.a");
6831 lto_gcc_spec = argv[0];
6833 /* Rebuild the COMPILER_PATH and LIBRARY_PATH environment variables
6835 putenv_from_prefixes (&exec_prefixes, "COMPILER_PATH", false);
6836 putenv_from_prefixes (&startfile_prefixes, LIBRARY_PATH_ENV, true);
6838 if (print_subprocess_help == 1)
6840 printf (_("\nLinker options\n==============\n\n"));
6841 printf (_("Use \"-Wl,OPTION\" to pass \"OPTION\""
6842 " to the linker.\n\n"));
6845 value = do_spec (link_command_spec);
6848 linker_was_run = (tmp != execution_count);
6851 /* If options said don't run linker,
6852 complain about input files to be given to the linker. */
6854 if (! linker_was_run && !seen_error ())
6855 for (i = 0; (int) i < n_infiles; i++)
6856 if (explicit_link_files[i]
6857 && !(infiles[i].language && infiles[i].language[0] == '*'))
6858 warning (0, "%s: linker input file unused because linking not done",
6861 /* Delete some or all of the temporary files we made. */
6864 delete_failure_queue ();
6865 delete_temp_files ();
6867 if (print_help_list)
6869 printf (("\nFor bug reporting instructions, please see:\n"));
6870 printf ("%s\n", bug_report_url);
6873 return (signal_count != 0 ? 2
6874 : seen_error () ? (pass_exit_codes ? greatest_status : 1)
6878 /* Find the proper compilation spec for the file name NAME,
6879 whose length is LENGTH. LANGUAGE is the specified language,
6880 or 0 if this file is to be passed to the linker. */
6882 static struct compiler *
6883 lookup_compiler (const char *name, size_t length, const char *language)
6885 struct compiler *cp;
6887 /* If this was specified by the user to be a linker input, indicate that. */
6888 if (language != 0 && language[0] == '*')
6891 /* Otherwise, look for the language, if one is spec'd. */
6894 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6895 if (cp->suffix[0] == '@' && !strcmp (cp->suffix + 1, language))
6898 error ("language %s not recognized", language);
6902 /* Look for a suffix. */
6903 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6905 if (/* The suffix `-' matches only the file name `-'. */
6906 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6907 || (strlen (cp->suffix) < length
6908 /* See if the suffix matches the end of NAME. */
6909 && !strcmp (cp->suffix,
6910 name + length - strlen (cp->suffix))
6915 #if defined (OS2) ||defined (HAVE_DOS_BASED_FILE_SYSTEM)
6916 /* Look again, but case-insensitively this time. */
6918 for (cp = compilers + n_compilers - 1; cp >= compilers; cp--)
6920 if (/* The suffix `-' matches only the file name `-'. */
6921 (!strcmp (cp->suffix, "-") && !strcmp (name, "-"))
6922 || (strlen (cp->suffix) < length
6923 /* See if the suffix matches the end of NAME. */
6924 && ((!strcmp (cp->suffix,
6925 name + length - strlen (cp->suffix))
6926 || !strpbrk (cp->suffix, "ABCDEFGHIJKLMNOPQRSTUVWXYZ"))
6927 && !strcasecmp (cp->suffix,
6928 name + length - strlen (cp->suffix)))
6934 if (cp >= compilers)
6936 if (cp->spec[0] != '@')
6937 /* A non-alias entry: return it. */
6940 /* An alias entry maps a suffix to a language.
6941 Search for the language; pass 0 for NAME and LENGTH
6942 to avoid infinite recursion if language not found. */
6943 return lookup_compiler (NULL, 0, cp->spec + 1);
6949 save_string (const char *s, int len)
6951 char *result = XNEWVEC (char, len + 1);
6953 memcpy (result, s, len);
6959 pfatal_with_name (const char *name)
6961 perror_with_name (name);
6962 delete_temp_files ();
6967 perror_with_name (const char *name)
6969 error ("%s: %m", name);
6973 validate_switches_from_spec (const char *spec)
6975 const char *p = spec;
6978 if (c == '%' && (*p == '{' || *p == '<' || (*p == 'W' && *++p == '{')))
6979 /* We have a switch spec. */
6980 p = validate_switches (p + 1);
6984 validate_all_switches (void)
6986 struct compiler *comp;
6987 struct spec_list *spec;
6989 for (comp = compilers; comp->spec; comp++)
6990 validate_switches_from_spec (comp->spec);
6992 /* Look through the linked list of specs read from the specs file. */
6993 for (spec = specs; spec; spec = spec->next)
6994 validate_switches_from_spec (*spec->ptr_spec);
6996 validate_switches_from_spec (link_command_spec);
6999 /* Look at the switch-name that comes after START
7000 and mark as valid all supplied switches that match it. */
7003 validate_switches (const char *start)
7005 const char *p = start;
7009 bool suffix = false;
7010 bool starred = false;
7012 #define SKIP_WHITE() do { while (*p == ' ' || *p == '\t') p++; } while (0)
7021 if (*p == '.' || *p == ',')
7025 while (ISIDNUM (*p) || *p == '-' || *p == '+' || *p == '='
7026 || *p == ',' || *p == '.' || *p == '@')
7031 starred = true, p++;
7037 /* Mark all matching switches as valid. */
7038 for (i = 0; i < n_switches; i++)
7039 if (!strncmp (switches[i].part1, atom, len)
7040 && (starred || switches[i].part1[len] == 0))
7041 switches[i].validated = 1;
7045 if (*p && (p[-1] == '|' || p[-1] == '&'))
7048 if (*p && p[-1] == ':')
7050 while (*p && *p != ';' && *p != '}')
7055 if (*p == '{' || *p == '<')
7056 p = validate_switches (p+1);
7057 else if (p[0] == 'W' && p[1] == '{')
7058 p = validate_switches (p+2);
7065 if (*p && p[-1] == ';')
7079 static struct mdswitchstr *mdswitches;
7080 static int n_mdswitches;
7082 /* Check whether a particular argument was used. The first time we
7083 canonicalize the switches to keep only the ones we care about. */
7086 used_arg (const char *p, int len)
7091 const char *replace;
7096 static struct mswitchstr *mswitches;
7097 static int n_mswitches;
7102 struct mswitchstr *matches;
7106 /* Break multilib_matches into the component strings of string
7107 and replacement string. */
7108 for (q = multilib_matches; *q != '\0'; q++)
7113 = (struct mswitchstr *) alloca ((sizeof (struct mswitchstr)) * cnt);
7115 q = multilib_matches;
7124 fatal_error ("multilib spec %qs is invalid",
7129 matches[i].len = q - matches[i].str;
7131 matches[i].replace = ++q;
7132 while (*q != ';' && *q != '\0')
7135 goto invalid_matches;
7138 matches[i].rep_len = q - matches[i].replace;
7144 /* Now build a list of the replacement string for switches that we care
7145 about. Make sure we allocate at least one entry. This prevents
7146 xmalloc from calling fatal, and prevents us from re-executing this
7149 = XNEWVEC (struct mswitchstr, n_mdswitches + (n_switches ? n_switches : 1));
7150 for (i = 0; i < n_switches; i++)
7151 if ((switches[i].live_cond & SWITCH_IGNORE) == 0)
7153 int xlen = strlen (switches[i].part1);
7154 for (j = 0; j < cnt; j++)
7155 if (xlen == matches[j].len
7156 && ! strncmp (switches[i].part1, matches[j].str, xlen))
7158 mswitches[n_mswitches].str = matches[j].replace;
7159 mswitches[n_mswitches].len = matches[j].rep_len;
7160 mswitches[n_mswitches].replace = (char *) 0;
7161 mswitches[n_mswitches].rep_len = 0;
7167 /* Add MULTILIB_DEFAULTS switches too, as long as they were not present
7168 on the command line nor any options mutually incompatible with
7170 for (i = 0; i < n_mdswitches; i++)
7174 for (q = multilib_options; *q != '\0'; q++)
7180 while (strncmp (q, mdswitches[i].str, mdswitches[i].len) != 0
7181 || strchr (" /", q[mdswitches[i].len]) == NULL)
7183 while (*q != ' ' && *q != '/' && *q != '\0')
7190 if (*q != ' ' && *q != '\0')
7192 while (*r != ' ' && *r != '\0')
7195 while (*q != ' ' && *q != '/' && *q != '\0')
7198 if (used_arg (r, q - r))
7203 mswitches[n_mswitches].str = mdswitches[i].str;
7204 mswitches[n_mswitches].len = mdswitches[i].len;
7205 mswitches[n_mswitches].replace = (char *) 0;
7206 mswitches[n_mswitches].rep_len = 0;
7219 for (i = 0; i < n_mswitches; i++)
7220 if (len == mswitches[i].len && ! strncmp (p, mswitches[i].str, len))
7227 default_arg (const char *p, int len)
7231 for (i = 0; i < n_mdswitches; i++)
7232 if (len == mdswitches[i].len && ! strncmp (p, mdswitches[i].str, len))
7238 /* Work out the subdirectory to use based on the options. The format of
7239 multilib_select is a list of elements. Each element is a subdirectory
7240 name followed by a list of options followed by a semicolon. The format
7241 of multilib_exclusions is the same, but without the preceding
7242 directory. First gcc will check the exclusions, if none of the options
7243 beginning with an exclamation point are present, and all of the other
7244 options are present, then we will ignore this completely. Passing
7245 that, gcc will consider each multilib_select in turn using the same
7246 rules for matching the options. If a match is found, that subdirectory
7250 set_multilib_dir (void)
7253 unsigned int this_path_len;
7254 const char *this_path, *this_arg;
7255 const char *start, *end;
7257 int ok, ndfltok, first;
7260 start = multilib_defaults;
7261 while (*start == ' ' || *start == '\t')
7263 while (*start != '\0')
7266 while (*start != ' ' && *start != '\t' && *start != '\0')
7268 while (*start == ' ' || *start == '\t')
7276 mdswitches = XNEWVEC (struct mdswitchstr, n_mdswitches);
7277 for (start = multilib_defaults; *start != '\0'; start = end + 1)
7279 while (*start == ' ' || *start == '\t')
7285 for (end = start + 1;
7286 *end != ' ' && *end != '\t' && *end != '\0'; end++)
7289 obstack_grow (&multilib_obstack, start, end - start);
7290 obstack_1grow (&multilib_obstack, 0);
7291 mdswitches[i].str = XOBFINISH (&multilib_obstack, const char *);
7292 mdswitches[i++].len = end - start;
7299 p = multilib_exclusions;
7302 /* Ignore newlines. */
7309 /* Check the arguments. */
7316 fatal_error ("multilib exclusions %qs is invalid",
7317 multilib_exclusions);
7327 while (*p != ' ' && *p != ';')
7330 goto invalid_exclusions;
7334 if (*this_arg != '!')
7342 ok = used_arg (this_arg, p - this_arg);
7357 p = multilib_select;
7360 /* Ignore newlines. */
7367 /* Get the initial path. */
7374 fatal_error ("multilib select %qs is invalid",
7379 this_path_len = p - this_path;
7381 /* Check the arguments. */
7388 goto invalid_select;
7397 while (*p != ' ' && *p != ';')
7400 goto invalid_select;
7404 if (*this_arg != '!')
7412 /* If this is a default argument, we can just ignore it.
7413 This is true even if this_arg begins with '!'. Beginning
7414 with '!' does not mean that this argument is necessarily
7415 inappropriate for this library: it merely means that
7416 there is a more specific library which uses this
7417 argument. If this argument is a default, we need not
7418 consider that more specific library. */
7419 ok = used_arg (this_arg, p - this_arg);
7426 if (default_arg (this_arg, p - this_arg))
7435 if (this_path_len != 1
7436 || this_path[0] != '.')
7438 char *new_multilib_dir = XNEWVEC (char, this_path_len + 1);
7441 strncpy (new_multilib_dir, this_path, this_path_len);
7442 new_multilib_dir[this_path_len] = '\0';
7443 q = strchr (new_multilib_dir, ':');
7446 multilib_dir = new_multilib_dir;
7453 const char *q = this_path, *end = this_path + this_path_len;
7455 while (q < end && *q != ':')
7459 char *new_multilib_os_dir = XNEWVEC (char, end - q);
7460 memcpy (new_multilib_os_dir, q + 1, end - q - 1);
7461 new_multilib_os_dir[end - q - 1] = '\0';
7462 multilib_os_dir = new_multilib_os_dir;
7470 if (multilib_dir == NULL && multilib_os_dir != NULL
7471 && strcmp (multilib_os_dir, ".") == 0)
7473 free (CONST_CAST (char *, multilib_os_dir));
7474 multilib_os_dir = NULL;
7476 else if (multilib_dir != NULL && multilib_os_dir == NULL)
7477 multilib_os_dir = multilib_dir;
7480 /* Print out the multiple library subdirectory selection
7481 information. This prints out a series of lines. Each line looks
7482 like SUBDIRECTORY;@OPTION@OPTION, with as many options as is
7483 required. Only the desired options are printed out, the negative
7484 matches. The options are print without a leading dash. There are
7485 no spaces to make it easy to use the information in the shell.
7486 Each subdirectory is printed only once. This assumes the ordering
7487 generated by the genmultilib script. Also, we leave out ones that match
7491 print_multilib_info (void)
7493 const char *p = multilib_select;
7494 const char *last_path = 0, *this_path;
7496 unsigned int last_path_len = 0;
7501 /* Ignore newlines. */
7508 /* Get the initial path. */
7515 fatal_error ("multilib select %qs is invalid", multilib_select);
7521 /* When --disable-multilib was used but target defines
7522 MULTILIB_OSDIRNAMES, entries starting with .: are there just
7523 to find multilib_os_dir, so skip them from output. */
7524 if (this_path[0] == '.' && this_path[1] == ':')
7527 /* Check for matches with the multilib_exclusions. We don't bother
7528 with the '!' in either list. If any of the exclusion rules match
7529 all of its options with the select rule, we skip it. */
7531 const char *e = multilib_exclusions;
7532 const char *this_arg;
7537 /* Ignore newlines. */
7544 /* Check the arguments. */
7553 fatal_error ("multilib exclusion %qs is invalid",
7554 multilib_exclusions);
7565 while (*e != ' ' && *e != ';')
7568 goto invalid_exclusion;
7576 int len = e - this_arg;
7579 goto invalid_select;
7583 while (*q != ' ' && *q != ';')
7586 goto invalid_select;
7590 if (! strncmp (arg, this_arg,
7591 (len < q - arg) ? q - arg : len)
7592 || default_arg (this_arg, e - this_arg))
7622 /* If this is a duplicate, skip it. */
7623 skip = (last_path != 0
7624 && (unsigned int) (p - this_path) == last_path_len
7625 && ! strncmp (last_path, this_path, last_path_len));
7627 last_path = this_path;
7628 last_path_len = p - this_path;
7631 /* If this directory requires any default arguments, we can skip
7632 it. We will already have printed a directory identical to
7633 this one which does not require that default argument. */
7644 goto invalid_select;
7651 while (*q != ' ' && *q != ';')
7654 goto invalid_select;
7659 && default_arg (arg, q - arg))
7674 for (p1 = last_path; p1 < p && *p1 != ':'; p1++)
7685 goto invalid_select;
7693 use_arg = *p != '!';
7698 while (*p != ' ' && *p != ';')
7701 goto invalid_select;
7713 /* If there are extra options, print them now. */
7714 if (multilib_extra && *multilib_extra)
7716 int print_at = TRUE;
7719 for (q = multilib_extra; *q != '\0'; q++)
7740 /* getenv built-in spec function.
7742 Returns the value of the environment variable given by its first
7743 argument, concatenated with the second argument. If the
7744 environment variable is not defined, a fatal error is issued. */
7747 getenv_spec_function (int argc, const char **argv)
7757 value = getenv (argv[0]);
7759 fatal_error ("environment variable %qs not defined", argv[0]);
7761 /* We have to escape every character of the environment variable so
7762 they are not interpreted as active spec characters. A
7763 particularly painful case is when we are reading a variable
7764 holding a windows path complete with \ separators. */
7765 len = strlen (value) * 2 + strlen (argv[1]) + 1;
7766 result = XNEWVAR (char, len);
7767 for (ptr = result; *value; ptr += 2)
7773 strcpy (ptr, argv[1]);
7778 /* if-exists built-in spec function.
7780 Checks to see if the file specified by the absolute pathname in
7781 ARGS exists. Returns that pathname if found.
7783 The usual use for this function is to check for a library file
7784 (whose name has been expanded with %s). */
7787 if_exists_spec_function (int argc, const char **argv)
7789 /* Must have only one argument. */
7790 if (argc == 1 && IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7796 /* if-exists-else built-in spec function.
7798 This is like if-exists, but takes an additional argument which
7799 is returned if the first argument does not exist. */
7802 if_exists_else_spec_function (int argc, const char **argv)
7804 /* Must have exactly two arguments. */
7808 if (IS_ABSOLUTE_PATH (argv[0]) && ! access (argv[0], R_OK))
7814 /* replace-outfile built-in spec function.
7816 This looks for the first argument in the outfiles array's name and
7817 replaces it with the second argument. */
7820 replace_outfile_spec_function (int argc, const char **argv)
7823 /* Must have exactly two arguments. */
7827 for (i = 0; i < n_infiles; i++)
7829 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7830 outfiles[i] = xstrdup (argv[1]);
7835 /* remove-outfile built-in spec function.
7837 * This looks for the first argument in the outfiles array's name and
7841 remove_outfile_spec_function (int argc, const char **argv)
7844 /* Must have exactly one argument. */
7848 for (i = 0; i < n_infiles; i++)
7850 if (outfiles[i] && !strcmp (outfiles[i], argv[0]))
7856 /* Given two version numbers, compares the two numbers.
7857 A version number must match the regular expression
7858 ([1-9][0-9]*|0)(\.([1-9][0-9]*|0))*
7861 compare_version_strings (const char *v1, const char *v2)
7866 if (regcomp (&r, "^([1-9][0-9]*|0)(\\.([1-9][0-9]*|0))*$",
7867 REG_EXTENDED | REG_NOSUB) != 0)
7869 rresult = regexec (&r, v1, 0, NULL, 0);
7870 if (rresult == REG_NOMATCH)
7871 fatal_error ("invalid version number %qs", v1);
7872 else if (rresult != 0)
7874 rresult = regexec (&r, v2, 0, NULL, 0);
7875 if (rresult == REG_NOMATCH)
7876 fatal_error ("invalid version number %qs", v2);
7877 else if (rresult != 0)
7880 return strverscmp (v1, v2);
7884 /* version_compare built-in spec function.
7886 This takes an argument of the following form:
7888 <comparison-op> <arg1> [<arg2>] <switch> <result>
7890 and produces "result" if the comparison evaluates to true,
7891 and nothing if it doesn't.
7893 The supported <comparison-op> values are:
7895 >= true if switch is a later (or same) version than arg1
7897 < true if switch is an earlier version than arg1
7899 >< true if switch is arg1 or later, and earlier than arg2
7900 <> true if switch is earlier than arg1 or is arg2 or later
7902 If the switch is not present, the condition is false unless
7903 the first character of the <comparison-op> is '!'.
7906 %:version-compare(>= 10.3 mmacosx-version-min= -lmx)
7907 adds -lmx if -mmacosx-version-min=10.3.9 was passed. */
7910 version_compare_spec_function (int argc, const char **argv)
7914 const char *switch_value = NULL;
7919 fatal_error ("too few arguments to %%:version-compare");
7920 if (argv[0][0] == '\0')
7922 if ((argv[0][1] == '<' || argv[0][1] == '>') && argv[0][0] != '!')
7924 if (argc != nargs + 3)
7925 fatal_error ("too many arguments to %%:version-compare");
7927 switch_len = strlen (argv[nargs + 1]);
7928 for (i = 0; i < n_switches; i++)
7929 if (!strncmp (switches[i].part1, argv[nargs + 1], switch_len)
7930 && check_live_switch (i, switch_len))
7931 switch_value = switches[i].part1 + switch_len;
7933 if (switch_value == NULL)
7937 comp1 = compare_version_strings (switch_value, argv[1]);
7939 comp2 = compare_version_strings (switch_value, argv[2]);
7941 comp2 = -1; /* This value unused. */
7944 switch (argv[0][0] << 8 | argv[0][1])
7946 case '>' << 8 | '=':
7947 result = comp1 >= 0;
7949 case '!' << 8 | '<':
7950 result = comp1 >= 0 || switch_value == NULL;
7955 case '!' << 8 | '>':
7956 result = comp1 < 0 || switch_value == NULL;
7958 case '>' << 8 | '<':
7959 result = comp1 >= 0 && comp2 < 0;
7961 case '<' << 8 | '>':
7962 result = comp1 < 0 || comp2 >= 0;
7966 fatal_error ("unknown operator %qs in %%:version-compare", argv[0]);
7971 return argv[nargs + 2];
7974 /* %:include builtin spec function. This differs from %include in that it
7975 can be nested inside a spec, and thus be conditionalized. It takes
7976 one argument, the filename, and looks for it in the startfile path.
7977 The result is always NULL, i.e. an empty expansion. */
7980 include_spec_function (int argc, const char **argv)
7987 file = find_a_file (&startfile_prefixes, argv[0], R_OK, true);
7988 read_specs (file ? file : argv[0], FALSE);
7993 /* %:find-file spec function. This function replaces its argument by
7994 the file found thru find_file, that is the -print-file-name gcc
7997 find_file_spec_function (int argc, const char **argv)
8004 file = find_file (argv[0]);
8009 /* %:find-plugindir spec function. This function replaces its argument
8010 by the -iplugindir=<dir> option. `dir' is found thru find_file, that
8011 is the -print-file-name gcc program option. */
8013 find_plugindir_spec_function (int argc, const char **argv ATTRIBUTE_UNUSED)
8020 option = concat ("-iplugindir=", find_file ("plugin"), NULL);
8025 /* %:print-asm-header spec function. Print a banner to say that the
8026 following output is from the assembler. */
8029 print_asm_header_spec_function (int arg ATTRIBUTE_UNUSED,
8030 const char **argv ATTRIBUTE_UNUSED)
8032 printf (_("Assembler options\n=================\n\n"));
8033 printf (_("Use \"-Wa,OPTION\" to pass \"OPTION\" to the assembler.\n\n"));
8038 /* Compute a timestamp to initialize flag_random_seed. */
8041 get_local_tick (void)
8045 /* Get some more or less random data. */
8046 #ifdef HAVE_GETTIMEOFDAY
8050 gettimeofday (&tv, NULL);
8051 ret = tv.tv_sec * 1000 + tv.tv_usec / 1000;
8055 time_t now = time (NULL);
8057 if (now != (time_t)-1)
8058 ret = (unsigned) now;
8065 /* %:compare-debug-dump-opt spec function. Save the last argument,
8066 expected to be the last -fdump-final-insns option, or generate a
8070 compare_debug_dump_opt_spec_function (int arg,
8071 const char **argv ATTRIBUTE_UNUSED)
8076 static char random_seed[HOST_BITS_PER_WIDE_INT / 4 + 3];
8079 fatal_error ("too many arguments to %%:compare-debug-dump-opt");
8081 do_spec_2 ("%{fdump-final-insns=*:%*}");
8082 do_spec_1 (" ", 0, NULL);
8084 if (argbuf_index > 0 && strcmp (argv[argbuf_index - 1], "."))
8089 name = xstrdup (argv[argbuf_index - 1]);
8094 const char *ext = NULL;
8096 if (argbuf_index > 0)
8098 do_spec_2 ("%{o*:%*}%{!o:%{!S:%b%O}%{S:%b.s}}");
8101 else if (!compare_debug)
8104 do_spec_2 ("%g.gkd");
8106 do_spec_1 (" ", 0, NULL);
8108 gcc_assert (argbuf_index > 0);
8110 name = concat (argbuf[argbuf_index - 1], ext, NULL);
8112 ret = concat ("-fdump-final-insns=", name, NULL);
8115 which = compare_debug < 0;
8116 debug_check_temp_file[which] = name;
8120 unsigned HOST_WIDE_INT value = get_local_tick () ^ getpid ();
8122 sprintf (random_seed, HOST_WIDE_INT_PRINT_HEX, value);
8126 ret = concat ("%{!frandom-seed=*:-frandom-seed=", random_seed, "} ",
8135 static const char *debug_auxbase_opt;
8137 /* %:compare-debug-self-opt spec function. Expands to the options
8138 that are to be passed in the second compilation of
8142 compare_debug_self_opt_spec_function (int arg,
8143 const char **argv ATTRIBUTE_UNUSED)
8146 fatal_error ("too many arguments to %%:compare-debug-self-opt");
8148 if (compare_debug >= 0)
8151 do_spec_2 ("%{c|S:%{o*:%*}}");
8152 do_spec_1 (" ", 0, NULL);
8154 if (argbuf_index > 0)
8155 debug_auxbase_opt = concat ("-auxbase-strip ",
8156 argbuf[argbuf_index - 1],
8159 debug_auxbase_opt = NULL;
8162 %<o %<MD %<MMD %<MF* %<MG %<MP %<MQ* %<MT* \
8163 %<fdump-final-insns=* -w -S -o %j \
8164 %{!fcompare-debug-second:-fcompare-debug-second} \
8165 ", compare_debug_opt, NULL);
8168 /* %:compare-debug-auxbase-opt spec function. Expands to the auxbase
8169 options that are to be passed in the second compilation of
8170 compare-debug. It expects, as an argument, the basename of the
8171 current input file name, with the .gk suffix appended to it. */
8174 compare_debug_auxbase_opt_spec_function (int arg,
8181 fatal_error ("too few arguments to %%:compare-debug-auxbase-opt");
8184 fatal_error ("too many arguments to %%:compare-debug-auxbase-opt");
8186 if (compare_debug >= 0)
8189 len = strlen (argv[0]);
8190 if (len < 3 || strcmp (argv[0] + len - 3, ".gk") != 0)
8191 fatal_error ("argument to %%:compare-debug-auxbase-opt "
8192 "does not end in .gk");
8194 if (debug_auxbase_opt)
8195 return debug_auxbase_opt;
8197 #define OPT "-auxbase "
8200 name = (char*) xmalloc (sizeof (OPT) + len);
8201 memcpy (name, OPT, sizeof (OPT) - 1);
8202 memcpy (name + sizeof (OPT) - 1, argv[0], len);
8203 name[sizeof (OPT) - 1 + len] = '\0';